<转>常用的js验证

常用的js验证

//添加时间侦听
function addListener(e, eventType, listener)
{
    Event.observe(e, eventType, listener);
};

//是否零长度字符串
function IsNone(s)
{
    return s.toString().empty();
}

//是否只有空白字符
function IsEmpty(s)
{
    return s.toString().blank();
}

//是否是数字
function IsNumber(s)
{
    s = s.toString();
    if (s.empty() || s.blank())
        return false;
    return !isNaN(s);
}

//是否是整数
function IsInteger(s)
{
    if (!IsNumber(s))
        return false;
    s = (s - 0).toString();
    return s.match(/^[-]?/d{1,15}$/gi) != null; //整型精度为15位。
}

//是否是双精度型
function IsDouble(s)
{
    if (!IsNumber(s))
        return false;
    s = (s - 0).toString();
    if (s.match(/^[-]?(/d+)[.]?(/d+)$/gi) == null)
        return false;
    return RegExp.$1.length + RegExp.$2.length <= 17; //浮点型精度为17位。
}

function IsDate(s)
{
    var reg = /^((((1[6-9]|[2-9]/d)/d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]/d|3[01]))|(((1[6-9]|[2-9]/d)/d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]/d|30))|(((1[6-9]|[2-9]/d)/d{2})-0?2-(0?[1-9]|1/d|2[0-8]))|(((1[6-9]|[2-9]/d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$/;
    return reg.test(s);
}

function IsTime(str)
{
    var tmp = str.toString();
    return (tmp.match(/^([01]?[0-9]|2[0-3]):([012345]?[0-9]|5[1-9]):([012345]?[0-9]|5[1-9])$/g) != null)
}


//功能：常用正则表达式
function isEmail(str)
{
    return str.toString().match(/^(?:[;]?[/w_-]+(?:[.][/w_-]+)*@[/w_-]+(?:[.][/w_-]+)+)+$/gi) != null;
}

function isQQ(str)
{
    return str.toString().match(/^[1-9]/d{4,12}$/g) != null;
}

//xxxx-xxxxxxxx-xxxx
function isPhone(str)
{
    return str.toString().match(/^((/(/d{2,3}/))|(/d{3}/-))?(/(0/d{2,3}/)|0/d{2,3}-)?[1-9]/d{6,7}(/-/d{1,4})?$/g) != null;
}

    //1xxxxxxxxxx
function isMobile(str)
{
    return str.toString().match(/^((/(/d{2,3}/))|(/d{3}/-))?1/d{10}$/g) != null;
}

//1xxxxxxxxxxx,xxxx-xxxxxxxx-xxxx,...
//"^(()|())(,(()|()))*$"
function isPhoneOrMobileList(str)
{
    return str.toString().match(/^((((/(/d{2,3}/))|(/d{3}/-))?1/d{10})|(((/(/d{2,3}/))|(/d{3}/-))?(/(0/d{2,3}/)|0/d{2,3}-)?[1-9]/d{6,7}(/-/d{1,4})?))(,((((/(/d{2,3}/))|(/d{3}/-))?1/d{10})|(((/(/d{2,3}/))|(/d{3}/-))?(/(0/d{2,3}/)|0/d{2,3}-)?[1-9]/d{6,7}(/-/d{1,4})?)))*$/g) != null;
}

//xx@xx.xx,xx@xx.xx,...
function isEmailList(emails)
{
    return emails.all(function(email) { return isEmail(email.strip()); });
}

//A-Z,a~z,0~9,",","-"
function isAscii(str)
{
    return str.toString().match(/^[A-Za-z0-9,-]*$/gi) != null;
}

//http:// or https://
function isUrl(str)
{
    return str.toString().match(/^(http|https):////[A-Za-z0-9]+/.[A-Za-z0-9]+[//=/?%/-&_~`@[/]/':+!]*([^/"/"])*$/gi) != null;
}

function isFtp(str)
{
    return str.toString().match(/^ftp:////[A-Za-z0-9]+/.[A-Za-z0-9]+[//=/?%/-&_~`@[/]/':+!]*([^/"/"])*$/gi) != null;
}

function isPostCode(str)
{
    return str.toString().match(/^[0-9]{6}$/g) != null;
}

//检测有无重复邮箱名
function checkEmailsReteration(emails)
{
    return emails.length > emails.map(function(email) { return email.strip().toLowerCase(); }).uniq().length;
}

//功能：页面展示时，处理文章编辑器中插入的图片的尺寸，使之适合页面大小，避免破坏页面布局
function ResizeImage(handleObj,w,h)
{
    var coll = handleObj.select("img");
    for(var i = 0; i < coll.length; i++)
    {
        var iWidth = coll[i].width;
        var iHeight = coll[i].height;
        if(coll[i].style.width != "")
            iWidth = parseInt(coll[i].style.width);
        if(coll[i].style.height != "")
            iHeight = parseInt(coll[i].style.height);
        if(iWidth >= iHeight)
        {
            if(iWidth> w)
            {
                if(coll[i].style.width != "")
                {
                    coll[i].style.width = w;
                    coll[i].style.height = (w * iHeight)/ iWidth;
                }
                else
                {
                    coll[i].width = w;
                    coll[i].height = (w * iHeight)/ iWidth;
                }
            }
        }
        else
        {
            if(iHeight > h)
            {
                if(coll[i].style.width != "")
                {
                    coll[i].style.width = (h * iWidth)/ iHeight;
                    coll[i].style.height = h;
                }
                else
                {
                    coll[i].height = h;
                    coll[i].width = (h * iWidth)/ iHeight;
                }
            }
        }
    }
}

function ResizeImageInWidth(handleObj,w,h)
{
    var coll = handleObj.select("img");
    var newW = 0, newH = 0;

    for(var i = 0; i < coll.length; i++)
    {
        var iWidth = coll[i].width;
        var iHeight = coll[i].height;
        if(coll[i].style.width != "")
            iWidth = parseInt(coll[i].style.width);
        if(coll[i].style.height != "")
            iHeight = parseInt(coll[i].style.height);
        if(iWidth >= iHeight)
        {
            if(iWidth> w)
            {
                newW = w;
                newH = (w * iHeight)/ iWidth;
            }
        }
        else
        {
            if(iWidth> w)
            {
                newW = w;
                newH = (w * iHeight)/ iWidth;
                if(newH > (1.5*h))
                    newH = 1.5*h;
            }
            else if(iHeight > (1.5*h))
            {
                newW = iWidth;
                newH = 1.5*h;
            }
        }
        if(newW > 0)
        {
            if(coll[i].style.width != "")
            {
                coll[i].style.width = newW;
                coll[i].style.height = newH;
            }
            else
            {
                coll[i].width = newW;
                coll[i].height = newH;
            }
            newW = 0;
            newH = 0;
        }
    }
}

function resizeImageByWidth(o, width)
{
    var oldWidth = 0;
    var oldHeight = 0;

    if(o != null && width > 0)
    {
        oldWidth = parseInt(o.width);
        oldHeight = parseInt(o.height);
        if(oldWidth > 0 && oldHeight > 0)
        {
            var z = width / oldWidth;
            var height = parseInt(oldHeight * z);
            o.width = width;
            o.height = height;
        }
    }
}

function resizeImageByWidthEx(srcWidth, srcHeight, setWidth){
        return (srcWidth > 0 && srcHeight > 0 && srcWidth > setWidth) ? { setWidth, height: srcHeight * (setWidth / srcWidth)} : { srcWidth, height: srcHeight};
}

function SetSameHeight()
{
    var divLeft = $("divDoorLeft");
    var divMiddle = $("divDoorMiddle");
    var divRight = $("divDoorRight");
    var divMain = $("divDoorMain");
    if(divLeft!=null)
    {
        var maxHeight = 0;
        if(divMain != null)
        {
            maxHeight = Math.max(divLeft.scrollHeight, divMain.scrollHeight);
            divLeft.style.height = maxHeight-25 + 'px';
            divMain.style.height = maxHeight + 'px';
        }
        else
        {
            maxHeight = Math.max(divLeft.scrollHeight,divMiddle.scrollHeight, divRight.scrollHeight);
            divLeft.style.height = maxHeight-25 + 'px';
            if(divMiddle.scrollHeight < maxHeight)
                divMiddle.style.height = maxHeight + 'px';
            divRight.style.height = maxHeight-25 + 'px';
        }
    }
}

function SetLate()
{
    SetSameHeight.delay(1);
}

function MM_swapImgRestore()
{
    var i,x,a=document.MM_sr;
    for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++)
        x.src=x.oSrc;
}

function MM_preloadImages() {
    var d=document;
    if(d.images)
    {
        if(!d.MM_p)
            d.MM_p = [];
        var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
        for(i=0; i<a.length; i++)
            if (a[i].indexOf("#")!=0)
            {
                d.MM_p[j]=new Image;
                d.MM_p[j++].src=a[i];
            }
    }
}

function MM_findObj(n, d)
{
    var p,i,x;
    if(!d)
        d=document;
    if((p=n.indexOf("?"))>0&&parent.frames.length)
    {
        d=parent.frames[n.substring(p+1)].document;
        n=n.substring(0,p);
    }
    if(!(x=d[n])&&d.all)
        x=d.all[n];
    for (i=0;!x&&i<d.forms.length;i++)
        x=d.forms[i][n];
    for(i=0;!x&&d.layers&&i<d.layers.length;i++)
        x=MM_findObj(n,d.layers[i].document);
    if(!x)
        x = $(n);
    return x;
}

function MM_swapImage()
{
    var i,j=0,x,a=MM_swapImage.arguments;
    document.MM_sr = [];
    for(i=0;i<(a.length-2);i+=3)
        if ((x=MM_findObj(a[i]))!=null)
        {
            document.MM_sr[j++]=x;
            if(!x.oSrc)
                x.oSrc=x.src;
            x.src=a[i+2];
        }
}

//定位到指定锚位置
function gotoAnchorLocation(id)
{
    var url = self.location.pathname;
    var search = self.location.search;
    self.location = url + search + "#cmt" + id;
}

function trim(str)
{
    // from: http://www.cnblogs.com/rubylouvre/archive/2009/09/18/1568794.html
    if (str.length == 0)
        return "";
    str = str.replace(/^/s/s*/, ''),
    ws = //s/,
    i = str.length;
    while (ws.test(str.charAt(--i))) ;
    return str.slice(0, i + 1);
}

// http://kevin.vanzonneveld.net/techblog/article/javascript_equivalent_for_phps_number_format/
function numberFormat (number, decimals, decPoint, thousandsSep) {
    var n = number, c = isNaN(decimals = Math.abs(decimals)) ? 0 : decimals,
        d = decPoint === undefined ? "." : decPoint,
        t = thousandsSep === undefined ? "," : thousandsSep, s = n < 0 ? "-" : "",
        i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "", j = (j = i.length) > 3 ? j % 3 : 0;
    return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(/d{3})(?=/d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
};