• 用javascript写的小键盘


      最近研究了一些在线支付网站的前端代码,在看易宝支付的商户接入网站时候发现他们使用的javascript小键盘很不错。在前端页面通过鼠标输入字符、密码可以防止黑客通过记录你点击键盘的按钮窃取你的重要信息,这里将易宝支付的小键盘组件和大家分享下。

      首先还是页面的目录结果,如下图:

      页面最终的效果如图所示:

      vkboard.js的代码:

    View Code
    var    _default_img_dir = 'js/';
    var vbk_images=new Array();
    function vbk_preloadimages(){
        if (document.images){
            for (i=0;i<vbk_preloadimages.arguments.length;i++){
                vbk_images[i]=new Image()
                vbk_images[i].src=_default_img_dir+vbk_preloadimages.arguments[i]
            }
        }
    }
    vbk_preloadimages("key_normal.gif","key_cap.gif","key_enter.gif","key_space.gif","key_back.gif","key_t0.gif","key_t1.gif","key_t2.gif","key_tab.gif","key_shift_l.gif","key_shift_r.gif","keyboard.gif","key_normal_down.gif","key_cap_down.gif","key_enter_down.gif","key_space_down.gif","key_back_down.gif");
    
    function VKeyboard(container_id, callback_ref, create_numpad, font_name,
                       font_size, font_color, dead_color, bg_color, key_color,
                       sel_item_color, border_color, inactive_border_color,
                       inactive_key_color, lang_sel_brd_color, show_click,
                       click_font_color, click_bg_color, click_border_color,
                       do_embed)
    {
      return this._construct(container_id, callback_ref, create_numpad,
                             font_name, font_size, font_color, dead_color,
                             bg_color, key_color, sel_item_color, border_color,
                             inactive_border_color, inactive_key_color,
                             lang_sel_brd_color, show_click, click_font_color,
                             click_bg_color, click_border_color, do_embed);
    }
    
    VKeyboard.prototype = {
    
      kbArray: [],
    
      _get_event_source: function(event)
      {
        var e = event || window.event;
        return e.srcElement || e.target;
      },
    
      _setup_event: function(elem, eventType, handler)
      {
        return (elem.attachEvent ? elem.attachEvent("on" + eventType, handler) : ((elem.addEventListener) ? elem.addEventListener(eventType, handler, false) : null));
      },
    
      _detach_event: function(elem, eventType, handler)
      {
        return (elem.detachEvent ? elem.detachEvent("on" + eventType, handler) : ((elem.removeEventListener) ? elem.removeEventListener(eventType, handler, false) : null));
      },
    
      _start_flash: function(in_el)
      {
        if(in_el.style.backgroundImage.indexOf('_down')<0)
          in_el.style.backgroundImage=in_el.style.backgroundImage.replace('.gif','_down.gif');
          return;
        function getColor(str, posOne, posTwo)
        {
          if(/rgb\((\d+),\s(\d+),\s(\d+)\)/.exec(str)) // try to detect Mozilla-style rgb value.
          {
            switch(posOne)
            {
              case 1: return parseInt(RegExp.$1, 10);
              case 2: return parseInt(RegExp.$2, 10);
              case 3: return parseInt(RegExp.$3, 10);
              default: return 0;
            }
          }
          else // standard (#xxxxxx or #xxx) way
            return str.length == 4 ? parseInt(str.substr(posOne, 1) + str.substr(posOne, 1), 16) : parseInt(str.substr(posTwo, 2), 16);
        }
    
        function getR(color_string)
        { return getColor(color_string, 1, 1); }
    
        function getG(color_string)
        { return getColor(color_string, 2, 3); }
    
        function getB(color_string)
        { return getColor(color_string, 3, 5); }
    
        var el = in_el.time ? in_el : (in_el.company && in_el.company.time ? in_el.company : null);
        if(el)
        {
          el.time = 0;
          clearInterval(el.timer);
        }
    
        var vkb = this;
        var ftc = vkb.fontcolor, bgc = vkb.keycolor, brc = vkb.bordercolor;
    
        // Special fixes for simple/dead/modifier keys:
    
        if(in_el.dead)
          ftc = vkb.deadcolor;
    
        if(((in_el.innerHTML == "Shift") && vkb.Shift) || ((in_el.innerHTML == "Caps") && vkb.Caps) || ((in_el.innerHTML == "AltGr") && vkb.AltGr))
          bgc = vkb.lic;
    
        // Extract base color values:
        var fr = getR(ftc), fg = getG(ftc), fb = getB(ftc);
        var kr = getR(bgc), kg = getG(bgc), kb = getB(bgc);
        var br = getR(brc), bg = getG(brc), bb = getB(brc);
    
        // Extract flash color values:
        var f_r = getR(vkb.cfc), f_g = getG(vkb.cfc), f_b = getB(vkb.cfc);
        var k_r = getR(vkb.cbg), k_g = getG(vkb.cbg), k_b = getB(vkb.cbg);
        var b_r = getR(vkb.cbr), b_g = getG(vkb.cbr), b_b = getB(vkb.cbr);
    
        var _shift_colors = function()
        {
          function dec2hex(dec)
          {
            var hexChars = "0123456789ABCDEF";
            var a = dec % 16;
            var b = (dec - a) / 16;
    
            return hexChars.charAt(b) + hexChars.charAt(a) + "";
          }
    
          in_el.time = !in_el.time ? 10 : (in_el.time - 1);
    
          function calc_color(start, end)
          { return (end - (in_el.time / 10) * (end - start)); }
    
          var t_f_r = calc_color(f_r, fr), t_f_g = calc_color(f_g, fg), t_f_b = calc_color(f_b, fb);
          var t_k_r = calc_color(k_r, kr), t_k_g = calc_color(k_g, kg), t_k_b = calc_color(k_b, kb);
          var t_b_r = calc_color(b_r, br), t_b_g = calc_color(b_g, bg), t_b_b = calc_color(b_b, bb);
    
          function setStyles(style)
          {
            style.color = "#" + dec2hex(t_f_r) + dec2hex(t_f_g) + dec2hex(t_f_b);
            style.borderColor = "#" + dec2hex(t_b_r) + dec2hex(t_b_g) + dec2hex(t_b_b);
            style.backgroundColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b);
          }
    
          var first = (in_el == vkb.mod[4]) ? false : true, is = in_el.style, cs = in_el.company ? in_el.company.style : null;
    
          if(cs && first)
            setStyles(cs);
    
          setStyles(is);
    
          if(cs)
          {
            if(!first)
            {
              setStyles(cs);
              is.borderBottomColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b);
            }
            else
              cs.borderBottomColor = "#" + dec2hex(t_k_r) + dec2hex(t_k_g) + dec2hex(t_k_b);
          }
    
          if(!in_el.time)
          {
            clearInterval(in_el.timer);
            return;
          }
        };
    
        _shift_colors();
    
        in_el.timer = window.setInterval(_shift_colors, 50);
      },
    
      _setup_style: function(obj, top, left, width, height, position, text_align, line_height, font_size, font_weight, padding_left, padding_right)
      {
        var os = obj.style;
        if(top)    os.top = top;
        if(left)   os.left = left;
        if(width)  os.width = width;
        if(height) os.height = height;
    
        if(position) os.position = position;
    
        if(text_align)  os.textAlign  = text_align;
        if(line_height) os.lineHeight = line_height;
        if(font_size)   os.fontSize   = 12;
    
        os.fontWeight = font_weight || "lighter";
        os.fontFamily = "Arial,Verdana,     New";
          
        if(padding_left)  os.paddingLeft  = padding_left;
        if(padding_right) os.paddingRight = padding_right;
      },
    
      _setup_key: function(parent, id, top, left, width, height, text_align, line_height, font_size, font_weight, padding_left, padding_right, backImage)
      {
        
        var _id = this.Cntr.id + id;
        var exists = document.getElementById(_id);
            
        var key = exists ? exists.parentNode : document.createElement("DIV");
        this._setup_style(key, top, left, width, height, "absolute");
        //    key.style.cursor="pointer";
        var key_sub = exists || document.createElement("DIV");
        key.appendChild(key_sub); parent.appendChild(key);
    
        this._setup_style(key_sub, "", "", "", line_height, "relative", text_align, line_height, font_size, font_weight, padding_left, padding_right);
        key_sub.id = _id;
        var bi = backImage?backImage:'url(key_normal.gif)';
        bi = bi.replace('url(','url('+_default_img_dir);
            key_sub.style.backgroundImage=bi;
            key_sub.style.backgroundRepeat='no-repeat';
            
        return key_sub;
      },
    
      _findX: function(obj)
      { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetLeft) : 0; },
    
      _findY: function(obj)
      { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetTop) : 0; },
    
      _findW: function(obj)
      { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetWidth) -2: 0; },
    
      _findH: function(obj)
      { return (obj && obj.parentNode) ? parseFloat(obj.parentNode.offsetHeight) : 0; },
    
      _construct: function(container_id, callback_ref, create_numpad, font_name, font_size, font_color, dead_color,
                           bg_color, key_color, sel_item_color, border_color, inactive_border_color, inactive_key_color,
                           lang_sel_brd_color, show_click, click_font_color, click_bg_color, click_border_color, do_embed)
      {
        this.cont_id=container_id;
        var exists  = (this.Cntr != undefined), ct = exists ? this.Cntr : document.getElementById(container_id);
        var changed = (font_size && (font_size != this.fontsize));
    
        this._Callback = ((typeof(callback_ref) == "function") && ((callback_ref.length == 1) || (callback_ref.length == 2))) ? callback_ref : (this._Callback || null);
    
        var ff = font_name || this.fontname || "";
        var fs = font_size || this.fontsize || "14px";
    
        var fc = font_color   || this.fontcolor   || "#000";
        var dc = dead_color   || this.deadcolor   || "#F00";
        var bg = bg_color     || this.bgcolor     || "#FFF";
        var kc = key_color    || this.keycolor    || "#FFF";
        var bc = border_color || this.bordercolor || "#777";
    
        this.lic = sel_item_color        || this.lic || "#DDD";
        this.ibc = inactive_border_color || this.ibc || "#CCC";
        this.ikc = inactive_key_color    || this.ikc || "#FFF";
        this.lsc = lang_sel_brd_color    || this.lsc || "#F77";
    
        this.cfc = click_font_color   || this.cfc || "#CC3300";
        this.cbg = click_bg_color     || this.cbg || "#FF9966";
        this.cbr = click_border_color || this.cbr || "#CC3300";
    
        this.sc = (show_click == undefined) ? ((this.sc == undefined) ? false : this.sc) : show_click;
    
        this.fontname = ff, this.fontsize = fs, this.fontcolor = fc;
        this.bgcolor = bg,  this.keycolor = kc, this.deadcolor = dc, this.bordercolor = bc;
            
        if(!exists)
        {
          this.Cntr = ct;
          this.Caps = this.Shift = this.AltGr = false;
    
          this.DeadAction = []; this.DeadAction[0] = this.DeadAction[1] = null;
          this.keys = [], this.mod = [], this.pad = [];
    
          VKeyboard.prototype.kbArray[container_id] = this;
        }
    
        var kb = exists ? ct.childNodes[0] : document.createElement("DIV");
         
        if(!exists)
        {
          ct.appendChild(kb);
          ct.style.display = "block";
          ct.style.zIndex  = 999;
          if(do_embed)
            ct.style.position = "relative";
          else
          {
            ct.style.position = "absolute";
    
            // Many thanks to Peter-Paul Koch (www.quirksmode.org) for the find-pos-X/find-pos-Y code.
            var initX = 0, ct_ = ct;
            if(ct_.offsetParent)
            {
              while(ct_.offsetParent)
              {
                initX += ct_.offsetLeft;
                ct_ = ct_.offsetParent;
              }
            }
            else if(ct_.x)
              initX += ct_.x;
    
            var initY = 0; ct_ = ct;
            if(ct_.offsetParent)
            {
              while(ct_.offsetParent)
              {
                initY += ct_.offsetTop;
                ct_ = ct_.offsetParent;
              }
            }
            else if(ct_.y)
              initY += ct_.y;
    
            ct.style.top = initY + "px", ct.style.left = initX +"px";
          }
    
          kb.style.position = "relative";
          kb.style.top      = "0px", kb.style.left = "0px";
          kb.style.backgroundImage = 'url('+_default_img_dir+'keyboard.gif)';
        }
            kb.style.padding = "5px";
        kb.style.border = "0px solid " + bc;
    
        var kb_main = exists ? kb.childNodes[0] : document.createElement("DIV"), ks = kb_main.style;
         
        if(!exists)
        {
          kb.appendChild(kb_main);
    
          ks.position = "relative";
          ks.width    = "1px";
          ks.cursor   = "default";
        }
    
        // Disable content selection:
        this._setup_event(kb_main, "selectstart", function(event) { return false; });
        this._setup_event(kb_main, "mousedown",   function(event) { if(event.preventDefault) event.preventDefault(); return false; });
    
        ks.fontFamily = ff, ks.backgroundColor = bg;
    
        if(!exists || changed)
        {
          var mag = parseFloat(fs) / 14.0, cell = Math.floor(25.0 * mag), dcell = 2 * cell;
          var cp = String(cell) + "px", lh = String(cell - 2.0) + "px";
                var cp_t0 = "45px";
    
          var prevX = 0, prevY = 1, prevW = 0, prevH = 0;
    
          // Convenience strings:
          var c = "center", n = "normal", r = "right", l = "left", e = "&nbsp;", pad = String(4 * mag) + "px";
    
          // Number row:
    
          var key;
          for(var i = 0; i < 13; i++)
          {
            this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), "1px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs);
    
            prevX = this._findX(key), prevW = this._findW(key);
          }
    
          prevY = this._findY(key);
          prevH = this._findH(key)-2; // universal key height
    
          var kb_kbp = this._setup_key(kb_main, "___kbp", "1px", (prevX + prevW + 1) + "px", (2.1 * cell) + "px", cp, r, lh, fs, n, "", pad, "url(key_back.gif)");
          kb_kbp.innerHTML = "";
          kb_kbp.subst="BackSpace";
          this.mod[0] = kb_kbp;
    
          // Top row:
    
          var kb_tab = this._setup_key(kb_main, "___tab", (prevY + prevH + 1) + "px", "1px", (1.48 * cell - 1) + "px", cp, l, lh, fs, n, "", pad, "url(key_tab.gif)");
          kb_tab.innerHTML = "";
          kb_tab.subst = "";
          this.mod[1] = kb_tab;
    
          prevX = this._findX(kb_tab), prevW = this._findW(kb_tab), prevY = this._findY(kb_tab);
                
          for(; i < 26; i++)
          {
              var bi = null;
              if(i==25){
                  this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp_t0, cp, c, lh, fs, null, "", null, "url(key_t0.gif)");
              }else{
                this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs);
            }
            prevX = this._findX(key), prevW = this._findW(key);
          }
    
          this.kbpH = this._findX(kb_kbp) + this._findW(kb_kbp);
            
          // Home row:
    
          var kb_caps = this._setup_key(kb_main, "___caps", (prevY + prevH + 1) + "px", "1px", dcell-6 + "px", cp, l, lh, fs, n, "",pad,'url(key_cap.gif)');
          kb_caps.innerHTML = "";
          kb_caps.subst = "Caps";
          this.mod[2] = kb_caps;
    
          prevX = this._findX(kb_caps), prevW = this._findW(kb_caps), prevY = this._findY(kb_caps);
    
          for(; i < 37; i++)
          {
            this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs);
    
            prevX = this._findX(key), prevW = this._findW(key);
          }
    
          prevY = this._findY(key);
          var s = prevX + prevW + 1;
            
          var kb_enter = this._setup_key(kb_main, "___enter_l", prevY + "px", s + "px", (this.kbpH - s+1) + "px", cp, r, lh, fs, n, "", pad,"url(key_enter.gif)");
          kb_enter.innerHTML = "";
          kb_enter.subst = "Enter";
          this.mod[3] = kb_enter;
                
          s = this._findX(this.keys[25]) + this._findW(this.keys[25]) + 1;
    
        //  var kb_enter_top = this._setup_key(kb_main, "___enter_top", this._findY(kb_tab) + "px", s + "px", (this.kbpH - s) + "px", cp, c, cp, fs);
        //  kb_enter_top.innerHTML = e;
        //  kb_enter_top.subst = "Enter";
        //  this.mod[4] = null;
        //  kb_enter_top.company = kb_enter;
        //  kb_enter.company = kb_enter_top;
    
          // Bottom row:
    
          var kb_shift = this._setup_key(kb_main, "___shift", (prevY + prevH + 1) + "px", "1px", (2.25 * cell) + "px", cp, l, lh, fs, n, "", pad,"url(key_shift_l.gif)");
          kb_shift.innerHTML = "";
          kb_shift.subst = "Shift";
          this.mod[5] = kb_shift;
    
          prevX = this._findX(kb_shift), prevW = this._findW(kb_shift), prevY = this._findY(kb_shift);
                
          for(; i < 47; i++)
          {
            this.keys[i] = key = this._setup_key(kb_main, "___key" + String(i), prevY + "px", (prevX + prevW + 1) + "px", cp, cp, c, lh, fs);
    
            prevX = this._findX(key), prevW = this._findW(key);
          }
          
          prevY = this._findY(key);
    
          var kb_shift_r = this._setup_key(kb_main, "___shift_r", prevY + "px", (prevX + prevW + 1) + "px", (this._findX(kb_kbp) + this._findW(kb_kbp) - prevX - prevW) + "px", cp, r, lh, fs, n, "", pad,"url(key_shift_r.gif)");
          kb_shift_r.innerHTML = "";
          kb_shift_r.subst = "Shift";
          this.mod[6] = kb_shift_r;
    
          // Language selector:
    
          var vcell = String(1.32 * cell) + "px";
    
          var kb_lang = this._setup_key(kb_main, "___lang", (prevY + prevH + 1) + "px", "1px", (1.43 * cell)+"px", cp, l, lh, fs, n, "",pad,"url(key_t1.gif)");
          kb_lang.subst = "Us";
          this.mod[7] = kb_lang;
    
          prevY = this._findY(kb_lang);
    
          ks.height = (prevY + prevH + 1) + "px";
    
          prevY += "px";
    
          var kb_res_1 = this._setup_key(kb_main, "___res_1", prevY, (this._findX(kb_lang) + this._findW(kb_lang) + 1) + "px", cp, cp, c, lh, fs);
          kb_res_1.innerHTML = e;
          this.mod[8] = kb_res_1;
    
          var kb_res_2 = this._setup_key(kb_main, "___res_2", prevY, (this._findX(kb_res_1) + this._findW(kb_res_1) + 1) + "px", cp, cp, c, lh, fs);
          kb_res_2.innerHTML = e;
          this.mod[9] = kb_res_2;
    
          var kb_space = this._setup_key(kb_main, "___space", prevY, (this._findX(kb_res_2) + this._findW(kb_res_2) + 1) + "px", (6.65 * cell) + "px", cp, c, lh, fs, "", "","","url(key_space.gif)");
          this.mod[10] = kb_space;
    
          var kb_alt_gr = this._setup_key(kb_main, "___alt_gr", prevY, (this._findX(kb_space) + this._findW(kb_space) + 1) + "px", cp, cp, c, lh, parseFloat(fs) * 0.786, n);
          kb_alt_gr.innerHTML = "";
          this.mod[11] = kb_alt_gr;
    
          var kb_res_3 = this._setup_key(kb_main, "___res_3", prevY, (this._findX(kb_alt_gr) + this._findW(kb_alt_gr) + 1) + "px", cp, cp, c, lh, fs);
          kb_res_3.innerHTML = e;
          this.mod[12] = kb_res_3;
    
          var kb_res_4 = this._setup_key(kb_main, "___res_4", prevY, (this._findX(kb_res_3) + this._findW(kb_res_3) + 1) + "px", cp, cp, c, lh, fs);
          kb_res_4.innerHTML = e;
          this.mod[13] = kb_res_4;
    
                var kb_res_5 = this._setup_key(kb_main, "___res_5", prevY, (this._findX(kb_res_4) + this._findW(kb_res_4) + 1) + "px", (1.77 * cell)+"px", cp, c, lh, fs,"","","","url(key_t2.gif)");
          kb_res_5.innerHTML = "";
          
          var w = this.kbpH + 1;
    
          // Numpad:
    
    //      if((create_numpad == undefined) ? true : create_numpad)
    //      {
    //        var w2 = this._create_numpad(container_id, kb_main);
    //        if(w2 > w) w = w2;
    //      }
    
          kb.style.width = ks.width = w + "px";
        }
    
        this._refresh_layout(this.avail_langs[0][0]);
        return this;
      },
      _set_key_state: function(key, on, textcolor, bordercolor, bgcolor)
      {
        if(key)
        {
          var ks = key.style;
          if(ks)
          {
            if(textcolor) ks.color = textcolor;
            if(bordercolor) ks.border = "0px solid " + bordercolor;
            if(bgcolor) ks.backgroundColor = bgcolor;
          }
    
          this._detach_event(key, 'mousedown', this._generic_callback_proc);
          this._detach_event(key, 'mouseup', this._generic_callback_proc_mouseup);
          this._detach_event(key, 'mouseout', this._generic_callback_proc_mouseout);
          this._detach_event(key, 'mouseover', this._generic_callback_proc_mouseover);
    
          if(on){
            this._setup_event(key, 'mousedown', this._generic_callback_proc);
              this._setup_event(key, 'mouseup', this._generic_callback_proc_mouseup);
              this._setup_event(key, 'mouseout', this._generic_callback_proc_mouseout);
              this._setup_event(key, 'mouseover', this._generic_callback_proc_mouseover);
          }
        }
      },
    
      _refresh_layout: function(layout)
      {
        if(!layout) layout = this.mod[7].subst;
    
        var fc = this.fontcolor, kc = this.keycolor, ikc = this.ikc;
        var ibc = this.ibc, bc = this.bordercolor, lic = this.lic;
    
        var arr_type = this.AltGr ? (this.Shift ? "alt_gr_shift" : "alt_gr") : (this.Shift ? "shift" : (this.Caps ? "caps" : "normal"));
    
        var nkeys = this.keys.length;
        var proto = VKeyboard.prototype;
    
        var norm_arr  = proto[layout + "_normal"];
        var caps_arr  = proto[layout + "_caps"];
        var shift_arr = proto[layout + "_shift"];
        var alt_arr   = proto[layout + "_alt_gr"];
    
        var alt_shift_arr = proto[layout + "_alt_gr_shift"];
    
        var dead_arr = proto[this.DeadAction[1]] || null;
    
        var bcaps  = (caps_arr  && (caps_arr.length  == nkeys));
        var bshift = (shift_arr && (shift_arr.length == nkeys));
        var balt   = (alt_arr   && (alt_arr.length   == nkeys));
        var baltsh = (balt      && alt_shift_arr && (alt_shift_arr.length == nkeys));
            
        var caps = this.mod[2], shift = this.mod[5], shift_r = this.mod[6], alt_gr = this.mod[11];
            
        if(bshift)
        {
          this._set_key_state(shift, true, fc, bc, this.Shift ? lic : kc);
          this._set_key_state(shift_r, true, fc, bc, this.Shift ? lic : kc);
        }
        else
        {
          this._set_key_state(shift, false, ibc, ibc, ikc);
          this._set_key_state(shift_r, false, ibc, ibc, ikc);
    
          if(arr_type == "shift")
          {
            arr_type = "normal";
            this.Shift = false;
          }
        }
    
        if(balt)
        {
          this._set_key_state(alt_gr, true, fc, bc, this.AltGr ? lic : kc);
    
          if(this.AltGr)
          {
            if(baltsh)
            {
              this._set_key_state(shift, true, fc, bc);
              this._set_key_state(shift_r, true, fc, bc);
            }
            else
            {
              this._set_key_state(shift, false, ibc, ibc, ikc);
              this._set_key_state(shift_r, false, ibc, ibc, ikc);
    
              arr_type = "alt_gr";
              this.Shift = false;
            }
          }
        }
        else
        {
          this._set_key_state(alt_gr, false, ibc, ibc, ikc);
    
          if(arr_type == "alt_gr")
          {
            arr_type = "normal";
            this.AltGr = false;
          }
          else if(arr_type == "alt_gr_shift")
          {
            arr_type = "normal";
            this.AltGr = false, this.Shift = false;
    
            shift.style.backgroundColor = kc, shift_r.style.backgroundColor = kc;
          }
        }
    
        if(this.Shift && !baltsh)
          this._set_key_state(alt_gr, false, ibc, ibc, ikc);
          
        if(bcaps && !this.AltGr)
          this._set_key_state(caps, true, fc, bc, this.Caps ? lic : kc);
        else
        {
          this._set_key_state(caps, false, ibc, ibc, ikc);
    
          this.Caps = false;
          if(arr_type == "caps") arr_type = "normal";
        }
    
        var arr_cur = proto[layout + "_" + arr_type];
    
        var i = nkeys;
        while(--i >= 0)
        {
          var key = this.keys[i], key_val = arr_cur[i]; if(!key_val) key_val = "";
                
          if(this.Shift && this.Caps)
          {
            var key_nrm = norm_arr[i], key_cps = caps_arr[i], key_shf = shift_arr[i];
    
            if((key_cps == key_shf) && (key_nrm != key_cps)) key_val = key_nrm;
          }
    
          if(typeof(key_val) == "object")
          {
            key.innerHTML = key_val[0], key.dead = key_val[1];
    
            this._set_key_state(key, true, this.deadcolor, bc, (this.DeadAction[0] == key_val[0] ? lic : kc));
          }
          else
          {
            key.dead = null;
    
            var block = false;
    
            if(key_val != "")
            {
              if(dead_arr)
              {
                for(var j = 0, l = dead_arr.length; j < l; j++) { var dk = dead_arr[j]; if(dk[0] == key_val) { key_val = dk[1]; break;}};
    
                if(j == l) block = true;
              }
    
              key.innerHTML = key_val;
    
              if(block)
                this._set_key_state(key, false, ibc, ibc, ikc);
              else
                this._set_key_state(key, true, fc, bc, kc);
            }
            else
            {
              key.innerHTML = "&nbsp;";
              this._set_key_state(key, false, ibc, ibc, ikc);
            }
          }
        }
    
        i = this.mod.length;
        while(--i >= 0)
        {
          var key = this.mod[i];
                
          switch(i)
          {
            case 1: case 2: case 5: case 6: case 11: case 4:
              break;
    
            case 7:
              break;
              key.innerHTML = layout;
              this._detach_event(key, 'mousedown', this._handle_lang_menu);
              if(this.DeadAction[1])
                this._set_key_state(key, false, ibc, ibc, ikc);
              else
              {
                var many = (this.avail_langs.length > 1);
    
                this._set_key_state(key, false, fc, many ? this.lsc : ibc, many ? kc : ikc);
                if(many)
                  this._setup_event(key, 'mousedown', this._handle_lang_menu);
              }
              break;
    
            case 10:
              key.innerHTML = this.DeadAction[1] ? this.DeadAction[0] : "&nbsp;";
    
            default:
              if((this.DeadAction[1] && (i != 10)) || ((i == 8) || (i == 9) || (i == 12) || (i ==13)))
                this._set_key_state(key, false, ibc, ibc, ikc);
              else
                this._set_key_state(key, true, fc, bc, kc);
    
              var ks = key.style;
              switch(i)
              {
                case 4: ks.borderBottomColor = kc; break;
    
                case 8: case 9: case 12: case 13: ks.borderColor = ibc; break;
              }
          }
        }
    
        i = this.pad.length;
        while(--i >= 0)
        {
          key = this.pad[i];
          if(this.DeadAction[1])
            this._set_key_state(key, false, ibc, ibc, ikc);
          else
            this._set_key_state(key, true, fc, bc, kc);
        }
      },
    
      _handle_lang_menu: function(event)
      {
        var pr = VKeyboard.prototype;
    
        var in_el = pr._get_event_source(event);
        var container_id = in_el.id.substring(0, in_el.id.indexOf("___"));
        var vkboard = pr.kbArray[container_id];
    
        var ct = vkboard.Cntr, menu = vkboard.menu;
    
        if(menu)
        { ct.removeChild(menu); vkboard.menu = null; }
        else
        {
          var fs = vkboard.fontsize, kc = vkboard.keycolor, bc = "1px solid " + vkboard.bordercolor;
          var mag = parseFloat(fs) / 14.0, cell = Math.floor(25.0 * mag), cp = cell + "px", lh = (cell - 2) + "px", w = String(102 * mag) + "px";
          var h1 = Math.floor(cell + mag), h2 = String(100 * mag) + "px", pad = String(4 * mag) + "px";
    
    
          var langs = pr.avail_langs.length;
    
          menu = document.createElement("DIV"); var ms = menu.style;
          ms.display  = "block";
          ms.position = "relative";
    
          ms.top = "1px", ms.left = "0px";
          ms.width = w;
          ms.border = bc;
          ms.backgroundColor = vkboard.bgcolor;
    
          vkboard.menu = ct.appendChild(menu);
    
          var menu_main = document.createElement("DIV"); ms = menu_main.style;
          ms.fontFamily = vkboard.fontname;
          ms.position   = "relative";
    
          ms.color  = vkboard.fontcolor;
          ms.width  = w;
          ms.height = String(langs * h1 + 1) + "px";
          ms.cursor = "default";
    
          menu.appendChild(menu_main);
    
          function setcolor(obj, c) { return function() { obj.style.backgroundColor = c; } };
    
          for(var j = 0; j < langs; j++)
          {
            var item = vkboard._setup_key(menu_main, "___lang_" + String(j), String(h1 * j + 1) + "px", "1px", h2, cp, "left", lh, fs, "normal", pad);
            item.style.backgroundColor = kc;
            item.style.border = bc;
            item.innerHTML = pr.avail_langs[j][1];
    
            vkboard._setup_event(item, 'mousedown', vkboard._handle_lang_item);
            vkboard._setup_event(item, 'mouseover', setcolor(item, vkboard.lic));
            vkboard._setup_event(item, 'mouseout',  setcolor(item, kc));
          }
        }
      },
    
      _handle_lang_item: function(event)
      {
        var pr = VKeyboard.prototype;
    
        var in_el = pr._get_event_source(event);
        var container_id = in_el.id.substring(0, in_el.id.indexOf("___"));
        var vkboard = pr.kbArray[container_id];
    
        var ndx = in_el.id.indexOf("___lang_");
        var lng = in_el.id.substring(ndx + 8, in_el.id.length);
        var newl = pr.avail_langs[lng][0];
    
        if(vkboard.mod[7].innerHTML != newl)
          vkboard._refresh_layout(newl);
    
        vkboard.Cntr.removeChild(vkboard.menu);
        vkboard.menu = null;
      },
      _generic_callback_proc_mouseup: function(event)
      {
          var pr = VKeyboard.prototype;
          var in_el = pr._get_event_source(event);
        if(in_el.style.backgroundImage.indexOf('_down')>0){
              in_el.style.backgroundImage=in_el.style.backgroundImage.replace('_down.gif','.gif');
        }
      },
      _generic_callback_proc_mouseout: function(event)
      {
          var pr = VKeyboard.prototype;
          var in_el = pr._get_event_source(event);
        if(in_el.style.backgroundImage.indexOf('_down')>0){
              in_el.style.backgroundImage=in_el.style.backgroundImage.replace('_down.gif','.gif');
        }
          in_el.style.border="0px solid";
      },
      _generic_callback_proc_mouseover: function(event)
      {
          var pr = VKeyboard.prototype;
          var in_el = pr._get_event_source(event);
          in_el.style.border="1px solid #FCBE2C";
      },
      _generic_callback_proc: function(event)
      {
        var pr = VKeyboard.prototype;
        var in_el = pr._get_event_source(event);
        var container_id = in_el.id.substring(0, in_el.id.indexOf("___"));
        var vkboard = pr.kbArray[container_id];
    
        var val = in_el.subst || in_el.innerHTML;
        if(!val) return;
        switch(val)
        {
          case "Caps": case "Shift": case "AltGr":
                    
            vkboard[val] = !vkboard[val];
            vkboard._refresh_layout();
            if(vkboard.sc) vkboard._start_flash(in_el);
            return;
                case "none":   val = "";   break;
          case "Tab":    val = "\t"; break;
          case "&nbsp;": val = " ";  break;
          case "&quot;": val = "\""; break;
          case "&lt;":   val = "<";  break;
          case "&gt;":   val = ">";  break;
          case "&amp;":  val = "&";  break;
        }
    
        if(vkboard.sc) vkboard._start_flash(in_el);
        
        if(in_el.dead)
        {
          if(in_el.dead == vkboard.DeadAction[1])
          { val = ""; vkboard.DeadAction[0] = vkboard.DeadAction[1] = null; }
          else
          { vkboard.DeadAction[0] = val; vkboard.DeadAction[1] = in_el.dead; }
    
          vkboard._refresh_layout();
          return;
        }
        else
        { var r;
          if(vkboard.DeadAction[1]) { vkboard.DeadAction[0] = vkboard.DeadAction[1] = null; r = true; }
    
    
          if(vkboard.AltGr || vkboard.Shift || r)
          {
            vkboard.AltGr = false; vkboard.Shift = false;
            vkboard._refresh_layout();
          }
        }
    
        if(vkboard._Callback) vkboard._Callback(val, vkboard.Cntr.id);
      },
    
      SetParameters: function()
      {
        var l = arguments.length;
        if(!l || (l % 2 != 0)) return false;
    
        var p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15;
    
        while(--l > 0)
        {
          var value = arguments[l];
    
          switch(arguments[l - 1])
          {
            case "callback":
              p0 = ((typeof(value) == "function") && ((value.length == 1) || (value.length == 2))) ? value : this._Callback;
              break;
    
            case "font-name":  p1 = value; break;
            case "font-size":  p2 = value; break;
            case "font-color": p3 = value; break;
            case "dead-color": p4 = value; break;
            case "base-color": p5 = value; break;
            case "key-color":  p6 = value; break;
    
            case "selection-color": p7 = value; break;
            case "border-color":    p8 = value; break;
    
            case "inactive-border-color": p9  = value; break;
            case "inactive-key-color":    p10 = value; break;
            case "lang-cell-color":       p11 = value; break;
    
            case "show-click": p12 = value; break;
    
            case "click-font-color":   p13  = value; break;
            case "click-key-color":    p14 = value; break;
            case "click-border-color": p15 = value; break;
    
            default: break;
          }
    
          l -= 1;
        }
    
        this._construct(this.Cntr.id, p0, (this.pad.length != 0), p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15);
    
        return true;
      },
        showStatus : false,
      Show: function(value)
      {
        var ct = this.Cntr.style;
            this.showStatus = value;
        ct.display = ((value == undefined) || (value == true)) ? "block" : ((value == false) ? "none" : ct.display);
      },
    
    
      // Layout info:
    
      avail_langs: [["Us", "English (US)"], ["Ca", "Canadian"],
                    ["Ru", "&#x0420;&#x0443;&#x0441;&#x0441;&#x043A;&#x0438;&#x0439;"], ["De", "Deutsch"],
                    ["Fr", "Fran&#x00E7;ais"], ["Es", "Espa&#x00F1;ol"], ["It", "Italiano"], ["Cz", "&#x010C;esky"],
                    ["El", "&#x0388;&#x03BB;&#x03BB;&#x03B7;&#x03BD;&#x03B1;&#x03C2;"], ["He", "&#x05E2;&#x05D1;&#x05E8;&#x05D9;&#x05EA;"]],
    
      // Us International:
      Us_normal: ["", "&#x0031;", "&#x0032;", "&#x0033;", "&#x0034;", "&#x0035;", "&#x0036;", "&#x0037;", "&#x0038;", "&#x0039;", "&#x0030;", "_", "",
                  "&#x0071;", "&#x0077;", "&#x0065;", "&#x0072;", "&#x0074;", "&#x0079;", "&#x0075;", "&#x0069;", "&#x006F;", "&#x0070;", "", "", "",
                  "&#x0061;", "&#x0073;", "&#x0064;", "&#x0066;", "&#x0067;", "&#x0068;", "&#x006A;", "&#x006B;", "&#x006C;", "", "",
                  "&#x007A;", "&#x0078;", "&#x0063;", "&#x0076;", "&#x0062;", "&#x006E;", "&#x006D;", "","",""],
    
      Us_caps: ["", "&#x0031;", "&#x0032;", "&#x0033;", "&#x0034;", "&#x0035;", "&#x0036;", "&#x0037;", "&#x0038;", "&#x0039;", "&#x0030;", "_", "",
                "&#x0051;", "&#x0057;", "&#x0045;", "&#x0052;", "&#x0054;", "&#x0059;", "&#x0055;", "&#x0049;", "&#x004F;", "&#x0050;", "", "", "",
                "&#x0041;", "&#x0053;", "&#x0044;", "&#x0046;", "&#x0047;", "&#x0048;", "&#x004A;", "&#x004B;", "&#x004C;", "", "",
                "&#x005A;", "&#x0058;", "&#x0043;", "&#x0056;", "&#x0042;", "&#x004E;", "&#x004D;", "","",""],
    
      Us_shift: [["&#x007E;", "Tilde"], "&#x0021;", "&#x0040;", "&#x0023;", "&#x0024;", "&#x0025;", ["&#x005E;", "Circumflex"], "&#x0026;", "&#x002A;", "&#x0028;", "&#x0029;", "&#x005F;", "&#x002B;",
                 "&#x0051;", "&#x0057;", "&#x0045;", "&#x0052;", "&#x0054;", "&#x0059;", "&#x0055;", "&#x0049;", "&#x004F;", "&#x0050;", "&#x007B;", "&#x007D;", "&#x007C;",
                 "&#x0041;", "&#x0053;", "&#x0044;", "&#x0046;", "&#x0047;", "&#x0048;", "&#x004A;", "&#x004B;", "&#x004C;", "&#x003A;", "&#x0022;",,
                 "&#x005A;", "&#x0058;", "&#x0043;", "&#x0056;", "&#x0042;", "&#x004E;", "&#x004D;", "&#x003C;", "&#x003E;", "&#x003F;"],
    
      Us_alt_gr: [, "&#x00A1;", "&#x00B2;", "&#x00B3;", "&#x00A4;", "&#x20AC;", "&#x00BC;", "&#x00BD;", "&#x00BE;", "&#x0091;", "&#x0092;", "&#x00A5;", "&#x00D7;",
                  "&#x00E4;", "&#x00E5;", "&#x00E9;", "&#x00AE;", "&#x00FE;", "&#x00FC;", "&#x00FA;", "&#x00ED;", "&#x00F3;", "&#x00F6;", "&#x00AB;", "&#x00BB;",
                  "&#x00AC;", "&#x00E1;", "&#x00DF;", "&#x0111;",,,,,, "&#x00F8;", "&#x00B6;", ["&#x00B4;", "Acute"],, "&#x00E6;",, "&#x00A9;",,,
                  "&#x00F1;", "&#x00B5;", "&#x00E7;",, "&#x00BF;"],
    
      Us_alt_gr_shift: [, "&#x00B9;",,, "&#x00A3;",,,,,,,, "&#x00F7;", "&#x00C4;", "&#x00C5;", "&#x00C9;",, "&#x00DE;", "&#x00DC;",
                        "&#x00DA;", "&#x00CD;", "&#x00D3;", "&#x00D6;",,, "&#x00A6;", "&#x00C1;", "&#x00A7;", "&#x0110;",,,,,, "&#x00D8;",
                        "&#x00B0;", ["&#x00A8;", "Umlaut"],, "&#x00C6;",, "&#x00A2;",,, "&#x00D1;",, "&#x00C7;",,""]
    };
    
    var all_vbks = new Object();
    
    function createKeyboard(srcId, targetId, bindId, checkkeyup){
    
        var tgtEle = document.getElementById(targetId)
        
        var vbk = null;
        var keyb_callback = function(ch)
      {
    
         var text = document.getElementById(targetId), val = text.value;
         
         if(checkkeyup){
             if(text.onkeyup){
                    text.onkeyup();
                }
            }
         switch(ch)
         {
           case "BackSpace":
             var min = (val.charCodeAt(val.length - 1) == 10) ? 2 : 1;
             text.value = val.substr(0, val.length - min);
             break;
    
           case "Enter":
                this.Show(false);
                text.onblur();
             //text.value += "\n";
             break;
    
           default:
             text.value += ch;
         }
        // text.focus();
      }
      
        var vkb = new VKeyboard(srcId,    // container's id
                               keyb_callback, // reference to the callback function
                               true,          // create the numpad or not? (this and the following params are optional)
                               "",            // font name ("" == system default)
                               "15.7px",        // font size in px
                               "#000",        // font color
                               "#F00",        // font color for the dead keys
                               "#FFF",        // keyboard base background color
                               "#FFF",        // keys' background color
                               "#DDD",        // background color of switched/selected item
                               "#777",        // border color
                               "#CCC",        // border/font color of "inactive" key (key with no value/disabled)
                               "#FFF",        // background color of "inactive" key (key with no value/disabled)
                               "#F77",        // border color of the language selector's cell
                               true,          // show key flash on click? (false by default)
                               "#CC3300",     // font color during flash
                               "#FF9966",     // key background color during flash
                               "#CC3300",     // key border color during flash
                               false);        // embed VKeyboard into the page?                       
      vkb.Show(false);
      if(bindId){
          all_vbks[bindId]=vkb;
          var bindEle = document.getElementById(bindId);
          bindEle.onclick=function(){
              for(v_key in all_vbks){
                  all_vbks[v_key].Show(false);
              }
              vkb.Show(!vkb.showStatus);
          }
      }
      return vkb;
    }

      注意:

    var_default_img_dir = 'js/';

      这里设置你js文件存放的目录,这里我的图片放到js文件夹里,如果有的童鞋想放到其他目录下,那么修改如下的代码就行了:

    vbk_preloadimages("key_normal.gif","key_cap.gif","key_enter.gif","key_space.gif","key_back.gif","key_t0.gif","key_t1.gif","key_t2.gif","key_tab.gif","key_shift_l.gif","key_shift_r.gif","keyboard.gif","key_normal_down.gif","key_cap_down.gif","key_enter_down.gif","key_space_down.gif","key_back_down.gif");

      keyboard.js是个空文件,大伙不用关心哈。

      keyboard.html的代码如下:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>javascript 制作的小键盘</title>
    </head>
    <script type="text/javascript" src="js/vkboard.js"></script>
    <body>
    <div id="kbdiv"></div>
    <form style=" margin-top:200px; margin-left:300px;">
        <label for="kbtxt">键盘输入的文本框:</label><input id="kbtxt" name="kbtxt" type="text" size="24" readonly="readonly"/><img src="images/key_icon.gif" id="kbimg" name="kbimg" style="margin-left:6px;"/>
    </form>
    <script type="text/javascript">
        createKeyboard("kbdiv","kbtxt","kbimg","true");
    </script>
    </body>
    </html>

      调用很简单,我这里就不多说了。

      我已经将源码上传到我的博客里,下载地址如下:

      https://files.cnblogs.com/sharpxiajun/keyboard.zip

     

    我将js键盘代码嵌入到我的博客里,不过键盘背景图片显示不好,大家可以试试看~~~~~~

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  • 原文地址:https://www.cnblogs.com/sharpxiajun/p/2469669.html
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