• JavaScript仿百度图片浏览效果(转载)


    转载来源:https://www.jb51.net/article/98030.htm

    这是一个非常好的案例,然而jquery的时代正在徐徐关闭。

    当你调整浏览器宽高,你会发现它不是自适应的。当你想把它放到elementUI项目中是,你发现不行!

    如果你项目采用了vue和elementUI,建议以找找vue实现版本,或者单纯js版本。

    本文实例为大家分享了js图片浏览效果的具体代码,供大家参考,具体内容如下

    在线地址:http://www.hui12.com/nbin/demo/imgskim/index.html
    https://nbin2008.github.io/demo/imgskim/index.html

    index

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    <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>仿百度图片浏览</title>
        <link rel="stylesheet" type="text/css" href="css/index.css"/>
        <script src="js/jquery-2.1.0.js"></script>
        <script src="js/data.js"></script>
        <script src="js/handleImage.js"></script>
        <script src="js/index.js"></script>
      </head>
      <body>
        <div class="container1">
          <div class="main1">
            <!-- 图片显示 -->
            <div class="showImg1">
              <a href="javascript:;" class="showImg1_btnLeft"></a>
              <a href="javascript:;" class="showImg1_btnRight"></a>
              <div class="imgBox1">
                <img src="" class="img1"/>
              </div>
            </div>
            <!-- 图片选择 -->
            <div class="chooseImg1_box">
              <div class="navList1">
                <span class="btnImgList">图片列表<i></i></span>
                <span class="btnImgScale">
                  <a href="javascript:;" class="scaleAdd1">+</a>
                  <b class="scale1">100%</b>
                  <a href="javascript:;" class="scaleReduce1">-</a>
                </span>
                <span class="btnImgInit1">原始尺寸</span>
                <span class="btnImgFullScreen">全屏</span>
                <span>其他</span>
                <span>其他</span>
              </div>
              <div class="boxLimit1">
                <a href="javascript:;" class="chooseImg1_btnLeft"></a>
                <div class="imgListBox1">
                  <ul class="imgList1"></ul>
                </div>
                <a href="javascript:;" class="chooseImg1_btnRight"></a>
              </div>
                
            </div>
          </div>
          <div class="sider1">
            <p class="pTroTit1"></p>
            <p class="pTroName1"></p>
          </div>
        </div>
        <!-- 全屏 -->
        <div class="container2">
          <div class="chooseTimeBox">
            <select class="select">
              <option value="2">2s</option>
              <option value="3">3s</option>
              <option value="5">5s</option>
            </select>
            <a href="javascript:;" class="btnStart">开始</a>
            <a href="javascript:;" class="btnStop">||</a>
          </div>
          <!-- main -->
          <div class="imgBox2">
            <img src="" class="img2" />
          </div>
          <a href="javascript:;" class="showImg2_btnLeft"></a>
          <a href="javascript:;" class="showImg2_btnRight"></a>
          <div class="imgListBox2">
            <ul class="imgList2"></ul>
          </div>
          <a href="javascript:;" class="chooseImg2_btnLeft aBtn" ></a>
          <a href="javascript:;" class="chooseImg2_btnRight aBtn"></a>
          <a href="javascript:;" class="btnExitFullScreen">x</a>
        </div>
      </body>
    </html>

    css

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    /* common */
    *{
      margin: 0; padding: 0;
    }
    body,html{
      font-family: "微软雅黑"; font-size: 12px; overflow: hidden;
    }
    li{
      list-style: none;
    }
    a{
      text-decoration: none; color: #000;
    }
    .btnIco{
      background: url(../images/btn.png);
    }
    b{
      font-weight: normal;
    }
    i{
      font-style: normal;
    }
      
    /* container1 */
    .container1{
      width: 100%; height: 100%; background-color: #f6f6f6; position: absolute; min-width: 1000px; min-height: 400px; -display: none;
    }
    .main1{
      position: absolute; width: calc(100% - 310px); height: calc(100% - 5px); left: 0; top: 5px; background-color: #fff;
    }
    .sider1{
      position: absolute; width: 300px; margin-left: 10px; height: calc(100% - 5px); overflow-x: hidden; overflow-y: auto; top: 5px; right: 0px; background-color: #fff;
    }
    .showImg1{
      width: 100%; position: relative;
    }
    .showImg1 a{
      position: absolute; width: 70px; height: 100%; top: 0; background-color: #fff; transition: all 0.5s;
    }
    .showImg1 a:hover{
      background-color: #e6e6e6;
    }
    .showImg1 a:before{
      content: ''; display: block; position: absolute; width: 40px; height: 72px; background: url(../images/btn.png); left: calc(50% - 20px); top: calc(50% - 31px);
    }
    .showImg1 .showImg1_btnLeft{
      left: 0;
    }
    .showImg1 .showImg1_btnRight{
      right: 0;
    }
    .showImg1 .showImg1_btnLeft:before{
      background-position: 0 -87px;
    }
    .showImg1 .showImg1_btnLeft:hover:before{
      background-position: -46px -87px;
    }
    .showImg1 .showImg1_btnRight:before{
      background-position: 0 0;
    }
    .showImg1 .showImg1_btnRight:hover:before{
      background-position: -46px 0;
    }
    .showImg1 .imgBox1{
      position: absolute; width: calc(100% - 144px); height: calc(100% - 4px); left: 72px; top: 2px; overflow: hidden;
    }
    .showImg1 .imgBox1 .img1{
      position: absolute; display: block;
    }
    .chooseImg1_box{
      position: relative; overflow: hidden;
    }
    .navList1{
      height: 38px; line-height: 38px; border-top: 1px solid #e3e3e3; border-bottom: 1px solid #e3e3e3; text-align: center; font-size: 14px;
    }
    .navList1 span{
      margin-left: -3px;
    }
    .navList1 span, .navList1 a{
      display: inline-block; color: #666; padding: 0 10px; cursor: pointer; position: relative;
    }
    .navList1 span:before{
      content: '|'; display: block; position: absolute; left: -3px; color: #e3e3e3;
    }
    .navList1 span:hover:before{
      display: none;
    }
    .navList1 span:last-child:after{
      content: '|'; display: block; position: absolute; right: 1px; color: #e3e3e3;
    }
    .navList1 span:hover, .navList1 a:hover{
      background-color: #e3e3e3;
    }
    .navList1 .btnImgScale, .navList1 .btnImgScale:hover{
      cursor: default; background-color: #fff; padding: 0;
    }
    .navList1 a{
      padding: 0; width: 30px;
    }
      
    .boxLimit1{
      position: relative; width: 100%; height: 100px
    }
    .boxLimit1 a{
      float: left; display: block; width: 25px; height: 70px; margin: 15px 2px 0; position: relative;
    }
    .boxLimit1 a:hover{
      background-color: #e6e6e6;
    }
    .boxLimit1 a.disable{
      background-color: #fff;
    }
    .boxLimit1 a:before{
      content: ''; display: block; position: absolute; width: 14px; height: 27px; left: calc(50% - 7px); top: calc(50% - 13px); background: url(../images/btn.png);
    }
    .boxLimit1 .chooseImg1_btnLeft:before, .boxLimit1 .chooseImg1_btnLeft.disable:hover:before{
      background-position: -27px -174px;
    }
    .boxLimit1 .chooseImg1_btnLeft.disable:hover:before{
      cursor: default;
    }
    .boxLimit1 .chooseImg1_btnLeft:hover:before{
      background-position: -73px -174px;
    }
    .boxLimit1 .chooseImg1_btnRight:before, .boxLimit1 .chooseImg1_btnRight.disable:hover:before{
      background-position: 0 -174px;
    }
    .boxLimit1 .chooseImg1_btnRight.disable:hover:before{
      cursor: default;
    }
    .boxLimit1 .chooseImg1_btnRight:hover:before{
      background-position: -46px -174px;
    }
    .imgListBox1{
      position: relative; width: calc(100% - 58px); height: 90px; padding: 4px 0 6px; float: left; overflow: hidden;
    }
    .imgListBox1 .imgList1{
      padding-top: 5px; position: absolute; left: 0; top: 0; transition: left 0.5s; float: left;
    }
    .imgListBox1 .imgList1 li{
      float: left; width: 68px; height: 68px; border: 1px solid #dfdfdf; margin-top: 10px; margin-right: 10px; background-image: url(../images/a2.jpg); background-repeat: no-repeat; background-position: center; background-size: contain; cursor: pointer;
    }
    .imgListBox1 .imgList1 li.active{
      width: 76px; height: 76px; border: 2px solid #3388fb; margin-top: 5px; background-image: url(../images/a1.jpg);
    }
      
    /* 全屏 */
    .container2{
      width: 100%; height: 100%; background-color: #262626; position: absolute; display: none;
    }
    .btnExitFullScreen{
      color: #989898; position: absolute; top: 1%; right: 1%; font-size: 20px; line-height: 20px;
    }
    .chooseTimeBox{
      position: absolute; width: 70px; text-align: center; height: 20px; line-height: 20px; background-color: #3d3d3d; left: calc(50% - 35px); top: 1.5%;
    }
    .chooseTimeBox *{
      color: #e1e1e1;
    }
    .chooseTimeBox .select{
      background: #121212; color: #999999; width: 40px; height: 18px; left: 2px; top:1px; outline: none; display: none; float: left; position: relative; top: 1px;
    }
    .chooseTimeBox .btnStart{
      -display: none;
    }
    .chooseTimeBox .btnStop{
      display: none; position: relative; top: -1px;
    }
    .imgBox2{
      position: absolute; width: 70%; height: calc(90% - 144px); -border: 1px solid red; left: 15%; top: 8%;
    }
    .imgBox2 img{
      position: absolute;
    }
    .showImg2_btnLeft, .showImg2_btnRight{
      width: 50%; height: calc(90% - 144px); position: absolute; top: 8%; -border: 1px solid #fff;
    }
    .showImg2_btnLeft{
      left: 0; cursor: url(../images/cur_left.jpg),auto;;
    }
    .showImg2_btnRight{
      right: 0; cursor: url(../images/cur_right.jpg),auto;;
    }
    .imgListBox2{
      position: absolute; width: 80%; height: 140px; border: 1px solid #3e3e3e; left: 10%; bottom: 2%; overflow: hidden;
    }
    .imgList2{
      position: absolute; left: 0; top: 0; width: 100%; height: 110px; top: 15px; transition: left 0.5s;
    }
    .imgList2 li{
      width: 110px; height: 110px; box-sizing: border-box; border: 1px solid #707070; float: left; margin-right: 5px; background-image: url(../images/a2.jpg); background-repeat: no-repeat; background-position: center; background-size: contain; cursor: pointer;
    }
    .imgList2 li.active{
      border: 2px solid #2f95d5;
    }
      
    .container2 .aBtn{
      position: absolute; display: block; width: 25px; height: 70px; margin: 15px 2px 0;
    }
    .container2 .aBtn:hover{
      background-color: #e6e6e6;
    }
    .container2 .aBtn.disable{
      background-color: #fff;
    }
    .container2 .aBtn:before{
      content: ''; display: block; position: absolute; width: 14px; height: 27px; left: calc(50% - 7px); top: calc(50% - 13px); background: url(../images/btn.png);
    }
    .container2 .chooseImg2_btnLeft{
      left: calc(10% - 50px); bottom: calc(2% + 35px);
    }
    .container2 .chooseImg2_btnRight{
      right: calc(10% - 50px); bottom: calc(2% + 35px);
    }
    .container2 .chooseImg2_btnLeft:before, .container2 .chooseImg2_btnLeft.disable:hover:before{
      background-position: -27px -174px;
    }
    .container2 .chooseImg2_btnLeft.disable:hover:before{
      cursor: default;
    }
    .container2 .chooseImg2_btnLeft:hover:before{
      background-position: -73px -174px;
    }
    .container2 .chooseImg2_btnRight:before, .container2 .chooseImg2_btnRight.disable:hover:before{
      background-position: 0 -174px;
    }
    .container2 .chooseImg2_btnRight.disable:hover:before{
      cursor: default;
    }
    .container2 .chooseImg2_btnRight:hover:before{
      background-position: -46px -174px;
    }

    data.js

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    var imgData = [
      {
        src: 'images/a1.jpg',
        title: 'a1.jpg',
        name: '火影忍着1'
      },
      {
        src: 'images/a2.jpg',
        title: 'a2.jpg',
        name: '火影忍着3'
      },
      {
        src: 'images/a3.jpg',
        title: 'a3.jpg',
        name: '火影忍着3'
      },
      {
        src: 'images/a4.jpg',
        title: 'a4.jpg',
        name: '火影忍着4'
      },
      {
        src: 'images/a5.jpg',
        title: 'a5.jpg',
        name: '火影忍着5'
      },
      {
        src: 'images/a6.jpg',
        title: 'a6.jpg',
        name: '火影忍着6'
      },
      {
        src: 'images/a7.jpg',
        title: 'a7.jpg',
        name: '火影忍着7'
      },
      {
        src: 'images/a8.jpg',
        title: 'a8.jpg',
        name: '火影忍着8'
      },
      {
        src: 'images/a9.jpg',
        title: 'a9.jpg',
        name: '火影忍着9'
      },
      {
        src: 'images/a10.jpg',
        title: 'a10.jpg',
        name: '火影忍着10'
      },
      {
        src: 'images/a11.jpg',
        title: 'a11.jpg',
        name: '火影忍着11'
      },
      {
        src: 'images/a12.jpg',
        title: 'a12.jpg',
        name: '火影忍着12'
      },
      {
        src: 'images/a13.jpg',
        title: 'a13.jpg',
        name: '火影忍着13'
      },
      {
        src: 'images/a14.jpg',
        title: 'a14.jpg',
        name: '火影忍着14'
      },
      {
        src: 'images/a15.jpg',
        title: 'a15.jpg',
        name: '火影忍着15'
      },
      {
        src: 'images/a16.jpg',
        title: 'a16.jpg',
        name: '火影忍着16'
      },
      {
        src: 'images/a17.jpg',
        title: 'a17.jpg',
        name: '火影忍着17'
      },
      {
        src: 'images/a18.jpg',
        title: 'a18.jpg',
        name: '火影忍着18'
      },
      {
        src: 'images/a19.jpg',
        title: 'a19.jpg',
        name: '火影忍着19'
      },
      {
        src: 'images/a20.jpg',
        title: 'a20.jpg',
        name: '火影忍着20'
      }
    ];

    handleImage.js

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    (function(window,$){
      function HandleImage(e){
        this.init(e);
      };
      var proto = {
        init: function(e){
          this.nb = {};
          this.nb.$box = e.box;
          this.nb.$img = e.img;
          this.setBoxWH();
          this.imgMouseEvent();
        },
        //对外提供,重置盒子的宽高,resize事件需要调用
        setBoxWH: function(){
          this.nb.bWidth = this.nb.$box.width();
          this.nb.bHeight = this.nb.$box.height();
        },
        getImgWH: function(src,isNormal,callback){
          var self = this;
          var img = new Image();
          img.onload = function(){
            self.nb.mWidth = img.width;
            self.nb.mHeight = img.height;
            self.setStartPosition(isNormal);
            callback && callback();
          };
          img.src = src;
        },
        //对外提供,输入图片地址,isNormal:true(初始不缩放)
        setImg: function(src,isNormal,callback){
          this.getImgWH(src,isNormal,callback);
          this.nb.$img.attr('src',src);
        },
        //初始化图片位置
        setStartPosition: function(isNormal){
          var self = this;
          var bW = self.nb.bWidth = self.nb.$box.width();
    <span style="white-space:pre">        </span>bH = self.nb.bHeight = self.nb.$box.height();
            mW = self.nb.mWidth,
            mH = self.nb.mHeight;
          var sScale = self.nb.nScale = Math.min(bW/mW,bH/mH);
          if( sScale>=1 || isNormal ){
            self.nb.nScale = 1;
            self.nb.left = (bW-mW)/2;
            self.nb.top = (bH-mH)/2;
            self.nb.$img.css({
              'width': mW,
              'height': mH,
              'left': (bW-mW)/2,
              'top': (bH-mH)/2
            })
          }else{
            self.nb.left = (bW-mW*sScale)/2;
            self.nb.top = (bH-mH*sScale)/2;
            self.nb.$img.css({
              'width': mW*sScale,
              'height': mH*sScale,
              'left': (bW-mW*sScale)/2,
              'top': (bH-mH*sScale)/2
            })
          };
          this.setCenter();
        },
        setCenter: function(){
          var self = this;
          this.nb.centerX = self.nb.left + self.nb.mWidth*self.nb.nScale/2;
          this.nb.centerY = self.nb.top + self.nb.mHeight*self.nb.nScale/2;
        },
        //对外提供,改变图片大小
        setScale: function(str,callback){
          var self = this;
          if( str == 'plus'){
            self.nb.nScale += 0.1;
          }else if( str == 'reduce' ){
            self.nb.nScale -= 0.1;
          };
          self.nb.nScale = self.nb.nScale>=10?10:self.nb.nScale;
          self.nb.nScale = self.nb.nScale<=0.1?0.1:self.nb.nScale;
          self.nb.left = self.nb.centerX - self.nb.mWidth*self.nb.nScale/2;
          self.nb.top = self.nb.centerY - self.nb.mHeight*self.nb.nScale/2;
          self.nb.$img.css({
            'width': self.nb.mWidth*self.nb.nScale,
            'height': self.nb.mHeight*self.nb.nScale,
            'left': self.nb.left,
            'top': self.nb.top
          });
          callback && callback();
        },
        //对外提供,获取缩放比例
        getScale: function(){
          return this.nb.nScale;
        },
        imgMouseEvent: function(){
          var self = this;
          var sX,sY,disX,disY,sImgX,sImgY,b;
          self.nb.$img.on('mousedown',function(e){
            b = true;
            sX = e.pageX;
            sY = e.pageY;
            sImgX = self.nb.left;
            sImgY = self.nb.top;
          });
          $(document).on('mousemove',function(e){
            if( !b ) return;
            self.nb.$img.css({
              'left': sImgX + e.pageX - sX,
              'top': sImgY + e.pageY - sY
            });
            return false;
          });
          $(document).on('mouseup',function(){
            b = false;
            self.nb.left = parseInt(self.nb.$img.css('left'));
            self.nb.top = parseInt(self.nb.$img.css('top'));
            self.setCenter();
          });
        }
      };
      HandleImage.prototype = proto;
      window.HandleImage = HandleImage;
    })(window,jQuery);

    index.js

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    $(document).ready(function(){
      var $win = $(window),
        $con1 = $('.container1'),
        $main1 = $('.main1'),
        $showImg1 = $('.showImg1'),
        $showImg1_btnLeft = $('.showImg1_btnLeft'),
        $showImg1_btnRight = $('.showImg1_btnRight'),
        $imgBox1 = $('.imgBox1'),
        $img1 = $('.img1'),
        $showImg1_btnLeft = $('.showImg1_btnLeft'),
        $showImg1_btnRight = $('.showImg1_btnRight'),
        $chooseImg1_btnLeft = $('.chooseImg1_btnLeft'),
        $chooseImg1_btnRight = $('.chooseImg1_btnRight'),
        $chooseImg1_box = $('.chooseImg1_box'),
        $scale1 = $('.scale1'),
        $btnImgInit1 = $('.btnImgInit1'),
        $btnImgFullScreen = $('.btnImgFullScreen'),
          
        $sider1 = $('.sider1'),
        $imgListBox1 = $('.imgListBox1'),
        $imgList1 = $('.imgList1');
      //container2-fullscreen对象
      var $con2 = $('.container2'),
        $select = $('.select'),
        $btnStart = $('.btnStart'),
        $btnStop = $('.btnStop'),
        $btnExitFullScreen = $('.btnExitFullScreen'),
        $imgBox2 = $('.imgBox2'),
        $img2 = $('.img2'),
        $showImg2_btnLeft = $('.showImg2_btnLeft'),
        $showImg2_btnRight = $('.showImg2_btnRight'),
        $chooseImg2_btnLeft = $('.chooseImg2_btnLeft'),
        $chooseImg2_btnRight = $('.chooseImg2_btnRight'),
        $imgListBox2 = $('.imgListBox2'),
        $imgList2 = $('.imgList2');
          
      var winW = $win.width(),
        winH = $win.height();
      //图片处理事件
      var h1;
      var handle = {
        init1: function(){
          h1 = new HandleImage({
            box: $imgBox1,
            img: $img1
          });
        },
        setImg1: function(src,isNormal){
          h1.setImg(src,isNormal,function(){
            imgListEvent.setScaleText();
          });
        }
      };
        
      //窗口改变事件
      var envFunc = {
        fnSize: function(){
          $(window).on('resize',function(){
            winW = $win.width(),
            winH = $win.height();
            containEvent.setCon();
            containEvent.setShowImg1_height();
            imgListEvent.imgList1_position();
            h1.setBoxWH();
          });
        }
      };
      envFunc.fnSize();
        
      //cantanier事件
      var containEvent = {
        init: function(){
          this.setCon();
          this.setShowImg1_height();
          handle.init1();
        },
        //设置container宽高
        setCon: function(){
          $con1.css({
            'width': winW,
            'height': winH
          });
          $con2.css({
            'width': winW,
            'height': winH
          });
        },
        //设置图片控制区高
        setShowImg1_height: function(){
          $showImg1.css({
            'height': $main1.height() - $chooseImg1_box.height()
          })
        },
        showText: function(data){
          $('.pTroTit1').text(data['src']);
          $('.pTroName1').text(data['title']);
        }
      };
      containEvent.init();
        
      //图片选择 普通的width:70+10, 选中active:80+10
      var $liActive_1;
      var index = 0;
      var imgListEvent = {
        init: function(){
          this.imgList1_add();
          this.imgList1_click();
          this.scaleEvent();
          this.mouseWheelEvent();
          this.fnClick();
        },
        imgList1_add: function(){
          var str = ''
          for( var i=0; i<imgData.length; i++ ){
            var tmp = imgData[i];
            str += '<li style="background-image:url('+ tmp.src +')" ></li>'
          };
          $imgList1.append(str);
          $imgList1.css({
            'width': (70+10)*imgData.length + 10
          });
        },
        imgList1_click: function(){
          var self = this;
          $imgList1.find('li').on('click',function(){
            if( $liActive_1 ) $liActive_1.removeClass('active');
            index = $(this).index();
            $(this).addClass('active');
            $liActive_1 = $(this);
            self.imgList1_position();
            handle.setImg1( imgData[index]['src'] );
            containEvent.showText( imgData[index] );
          });
          $imgList1.find('li').eq(0).trigger('click');
        },
        imgList1_position: function(){
          var boxWidth1 = $imgListBox1.width();
          var le = (boxWidth1/2 - index*80);
          le = Math.floor(le/80)*80;
          le = le>=0?0:le;
          var maxLe = (boxWidth1-$imgList1.width())+10;
          le = le<maxLe?maxLe:le;
          $imgList1.css({
            'left': le
          })
        },
        scaleEvent: function(){
          var timer = null;
          var btnPos = {
            x: null,
            y: null
          };
          var fnCallback = function(){
            imgListEvent.setScaleText();
          };
          $('.scaleAdd1').on('mousedown',function(e){
            h1.setScale('plus',fnCallback);
            checkBtnPos(e);
            timer = setTimeout(function(){
              fnAnimate('plus');
            },500);
          });
          $('.scaleReduce1').on('mousedown',function(e){
            h1.setScale('reduce',fnCallback);
            checkBtnPos(e);
            timer = setTimeout(function(){
              fnAnimate('reduce');
            },500);
          });
          $('.scaleAdd1').add($('.scaleReduce1')).on('mouseup',function(){
            clearInterval(timer);
            return false;
          });
          $('.scaleAdd1').add($('.scaleReduce1')).on('mousemove',function(e){
            if( Math.abs(e.pageX-btnPos.x)>=5 || Math.abs(e.pageY-btnPos.y)>=5 ){
              clearInterval(timer);
            };
            return false;
          });
          function checkBtnPos(e){
            btnPos.x = e.pageX;
            btnPos.y = e.pageY;
          };
          function fnAnimate(str){
            if( str == 'plus' ){
              timer = setInterval(function(){
                h1.setScale('plus',fnCallback);
              },30);
            }else if( str == 'reduce'){
              timer = setInterval(function(){
                h1.setScale('reduce',fnCallback);
              },30)
            };
          };
        },
        mouseWheelEvent: function(){
          var imgBox1 = $imgBox1.get(0);
          if( document.attachEvent ){
            imgBox1.attachEvent('onmousewheel',move)
          };
          if( document.addEventListener ){
            imgBox1.addEventListener('mousewheel',move,false);
            imgBox1.addEventListener('mousewheel',move,false);
          };
          var fnCallback = function(){
            imgListEvent.setScaleText();
          };
          function move(e){
            var up = true;
            if( e.wheelDelta ){
              up = e.wheelDelta > 0 ? true : false;
            };
            if( e.detail ){
              up = e.detail < 0 ? true : false;
            };
            if( up ){
              h1.setScale('plus',fnCallback);
            }else{
              h1.setScale('reduce',fnCallback);
            };
            if( e.preventDefault ){
              e.preventDefault();
            }else{
              e.returnValue = false;
            }
          };
        },
        setScaleText: function(){
          var scale = Math.round(h1.getScale()*100);
          $scale1.text(scale+'%');
        },
        fnClick: function(){
          $showImg1_btnRight.on('click',function(){
            $liActive_1.next().trigger('click');
          });
          $showImg1_btnLeft.on('click',function(){
            $liActive_1.prev().trigger('click');
          });
          $chooseImg1_btnLeft.on('click',function(){
            var w = $imgListBox1.width();
            var le = parseInt($imgList1.css('left')) + w;
            if( le > 0 ) le = 0;
            $imgList1.css({
              'left': le
            })
          });
          $chooseImg1_btnRight.on('click',function(){
            var w = $imgListBox1.width();
            var minLe = w - $imgList1.width();
            var le = parseInt($imgList1.css('left')) - w;
            if( le < minLe ) le = minLe;
            $imgList1.css({
              'left': le
            })
          });
          $btnImgInit1.on('click',function(){
            handle.setImg1( imgData[index]['src'], true );
          });
          $btnImgFullScreen.on('click',function(){
            fullScreen.enterFull();
          });
        }
      };
      imgListEvent.init();
        
      /*
       * container2
       */
      var $liActive_2;
      var timer2;
      function setImg2(src){
        $imgBox2;
        $img2;
        var bW,bH,mW,mH;
        var img = new Image();
        $img2.attr('src',src);
        img.onload = function(){
          mW = img.width;
          mH = img.height;
          bW = $imgBox2.width();
          bH = $imgBox2.height();
          setPosition();
        };
        img.src = src;
        function setPosition(){
          var sScale = Math.min(bW/mW,bH/mH);
          if( sScale>=1 ){
            $img2.css({
              'width': mW,
              'height': mH,
              'left': (bW-mW)/2,
              'top': (bH-mH)/2
            });
          }else{
            $img2.css({
              'width': mW*sScale,
              'height': mH*sScale,
              'left': (bW-mW*sScale)/2,
              'top': (bH-mH*sScale)/2
            });
          };
        };
      };
      var fullScreen = {
        init: function(){
          this.addImg();
          this.addClick();
        },
        addImg: function(){
          var str = ''
          for( var i=0; i<imgData.length; i++ ){
            var tmp = imgData[i];
            str += '<li style="background-image:url('+ tmp.src +')" ></li>'
          };
          $imgList2.append(str);
          $imgList2.css({
            'width': 115*imgData.length
          });
        },
        addClick: function(){
          var self = this;
          $imgList2.find('li').on('click',function(){
            if( $liActive_2 ) $liActive_2.removeClass('active');
            index = $(this).index();
            $(this).addClass('active');
            $liActive_2 = $(this);
            self.imgList2_position();
            setImg2( imgData[index]['src'] );
          });
          $showImg2_btnRight.on('click',function(){
            $liActive_2.next().trigger('click');
          });
          $showImg2_btnLeft.on('click',function(){
            $liActive_2.prev().trigger('click');
          });
          $chooseImg2_btnLeft.on('click',function(){
            var w = $imgListBox2.width();
            var le = parseInt($imgList2.css('left')) + w;
            if( le > 0 ) le = 0;
            $imgList2.css({
              'left': le
            })
          });
          $chooseImg2_btnRight.on('click',function(){
            var w = $imgListBox2.width();
            var minLe = w - $imgList2.width();
            var le = parseInt($imgList2.css('left')) - w;
            if( le < minLe ) le = minLe;
            $imgList2.css({
              'left': le
            })
          });
          $btnExitFullScreen.on('click',function(){
            self.exitFull();
          });
        },
        imgList2_position: function(){
          var boxWidth2 = $imgListBox2.width();
          var le = (boxWidth2/2 - index*115);
          le = Math.floor(le/115)*115;
          le = le>=0?0:le;
          var maxLe = (boxWidth2-$imgList2.width());
          le = le<maxLe?maxLe:le;
          $imgList2.css({
            'left': le
          });
        },
        enterFull: function(){
          var self = this;
          enterFullscreen();
          $con1.css('opacity','0');
          $con2.show();
          setTimeout(function(){
            $imgList2.find('li').eq(index).trigger('click');
          },500);
          //esc keyCode:27
          $(document).on('keyup.a',function(e){
            if( e.keyCode == 27 ){
              self.exitFull();
            };
          });
        },
        exitFull: function(){
          clearInterval(timer2);
          $(document).off('keyup.a');
          $con1.css('opacity','1');
          $con2.hide();
          animateEvent.showStart();
          setTimeout(function(){
    <span style="white-space:pre">        </span>$imgList1.find('li').eq(index).trigger('click');
    <span style="white-space:pre">      </span>},500);
          exitFullscreen();
        }
      };
      fullScreen.init();
    // fullScreen.enterFull();
        
      //定时器
      var animateEvent = {
        init: function(){
          var self = this;
          $btnStart.on('click',function(){
            self.start();
          });
          $btnStop.on('click',function(){
            self.stop();
          });
          $select.on('change',function(){
            self.start();
          });
        },
        start: function(){
          this.showStop();
          var intervalTime = parseInt($select.val())*1000;
          clearInterval(timer2);
          timer2 = setInterval(function(){
            $liActive_2.next().trigger('click');
          },intervalTime);
        },
        stop: function(){
          clearInterval(timer2);
          this.showStart();
        },
        showStart: function(){
          clearInterval(timer2);
          $select.show().val('2');
          $select.hide();
          $btnStop.hide();
          $btnStart.show();
        },
        showStop: function(){
          $btnStart.hide();
          $btnStop.show();
          $select.show();
        }
      };
      animateEvent.init();
        
      /*
       * 全屏事件
       */
      // 判断各种浏览器
      function enterFullscreen() {
        var element = document.documentElement;
        if (element.requestFullscreen) {
          element.requestFullscreen();
        } else if (element.mozRequestFullScreen) {
          element.mozRequestFullScreen();
        } else if (element.webkitRequestFullscreen) {
          element.webkitRequestFullscreen();
        } else if (element.msRequestFullscreen) {
          element.msRequestFullscreen();
        }
      }
      // 判断浏览器种类
      function exitFullscreen() {
        if (document.exitFullscreen) {
          document.exitFullscreen();
        } else if (document.mozCancelFullScreen) {
          document.mozCancelFullScreen();
        } else if (document.webkitExitFullscreen) {
          document.webkitExitFullscreen();
        }
      }
    });
     
     
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  • 原文地址:https://www.cnblogs.com/hao-1234-1234/p/11011396.html
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