方法——<37>

1,返回url参数

    /*
     * 返回参数值
     * @method getUrlPara
     * @papram {string},url中参数名
     * @return {string},url中参数值
     * */
    function getUrlPara(para){
        var str = window.location.href,
            reg = new RegExp('(\?|&)' + para + '=([^&?]*)', 'i');
        if( str.match(reg) != null){
            return str.match(reg)[2];
        }
        return null;
    }

 /*
     * 获取url传过来的参数，js版的$_GET
     * 如当前url为： http://www.xxx.com/?cid=123
     * var cid = _GET('cid');
     */
    Utils.prototype._GET = function(name) {
        var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);

        if (r!=null) return unescape(r[2]); return null;
    };

//@example: url = www.gm99.com/?aa=aa&bb=bb&cc=cc  return { aa : 'aa', bb : 'bb', cc : 'cc' }
//@example: url = www.gm99.com/  return null
 
function getUrlParams( url ){
    url = url && url != '' && url != null ? url : window.location.href;
    var params = url.substr( url.indexOf('?') + 1).split('&')
            ,paramsLen = params.length
            ,resultParams = null;
    if( url.indexOf('?') > -1 ){
        resultParams = {};
        for( var i = 0; i < paramsLen; i++ ){
            resultParams[params[i].split('=')[0]] = params[i].split('=')[1] ;
        }
    }
    return resultParams;
}

2,MD5加密算法

/*
     * MD5加密算法
     * @method MD5
     * @papram {string} string,待加密字符串
     * @return {string} string,加密後字符串
     * */
    function MD5(string) {

        function RotateLeft(lValue, iShiftBits) {
            return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
        }

        function AddUnsigned(lX,lY) {
            var lX4,lY4,lX8,lY8,lResult;
            lX8 = (lX & 0x80000000);
            lY8 = (lY & 0x80000000);
            lX4 = (lX & 0x40000000);
            lY4 = (lY & 0x40000000);
            lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
            if (lX4 & lY4) {
                return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
            }
            if (lX4 | lY4) {
                if (lResult & 0x40000000) {
                    return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
                } else {
                    return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
                }
            } else {
                return (lResult ^ lX8 ^ lY8);
            }
        }

        function F(x,y,z) { return (x & y) | ((~x) & z); }
        function G(x,y,z) { return (x & z) | (y & (~z)); }
        function H(x,y,z) { return (x ^ y ^ z); }
        function I(x,y,z) { return (y ^ (x | (~z))); }

        function FF(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        }

        function GG(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        }

        function HH(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        }

        function II(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        }

        function ConvertToWordArray(string) {
            var lWordCount;
            var lMessageLength = string.length;
            var lNumberOfWords_temp1=lMessageLength + 8;
            var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
            var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
            var lWordArray=Array(lNumberOfWords-1);
            var lBytePosition = 0;
            var lByteCount = 0;
            while ( lByteCount < lMessageLength ) {
                lWordCount = (lByteCount-(lByteCount % 4))/4;
                lBytePosition = (lByteCount % 4)*8;
                lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
                lByteCount++;
            }
            lWordCount = (lByteCount-(lByteCount % 4))/4;
            lBytePosition = (lByteCount % 4)*8;
            lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
            lWordArray[lNumberOfWords-2] = lMessageLength<<3;
            lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
            return lWordArray;
        }

        function WordToHex(lValue) {
            var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
            for (lCount = 0;lCount<=3;lCount++) {
                lByte = (lValue>>>(lCount*8)) & 255;
                WordToHexValue_temp = "0" + lByte.toString(16);
                WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
            }
            return WordToHexValue;
        }

        function Utf8Encode(string) {
            string = string.replace(/
/g,"
");
            var utftext = "";

            for (var n = 0; n < string.length; n++) {

                var c = string.charCodeAt(n);

                if (c < 128) {
                    utftext += String.fromCharCode(c);
                }
                else if((c > 127) && (c < 2048)) {
                    utftext += String.fromCharCode((c >> 6) | 192);
                    utftext += String.fromCharCode((c & 63) | 128);
                }
                else {
                    utftext += String.fromCharCode((c >> 12) | 224);
                    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                    utftext += String.fromCharCode((c & 63) | 128);
                }

            }

            return utftext;
        }

        var x=Array();
        var k,AA,BB,CC,DD,a,b,c,d;
        var S11=7, S12=12, S13=17, S14=22;
        var S21=5, S22=9 , S23=14, S24=20;
        var S31=4, S32=11, S33=16, S34=23;
        var S41=6, S42=10, S43=15, S44=21;

        string = Utf8Encode(string);

        x = ConvertToWordArray(string);

        a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;

        for (k=0;k<x.length;k+=16) {
            AA=a; BB=b; CC=c; DD=d;
            a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
            d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
            c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
            b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
            a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
            d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
            c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
            b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
            a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
            d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
            c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
            b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
            a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
            d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
            c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
            b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
            a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
            d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
            c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
            b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
            a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
            d=GG(d,a,b,c,x[k+10],S22,0x2441453);
            c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
            b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
            a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
            d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
            c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
            b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
            a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
            d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
            c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
            b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
            a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
            d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
            c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
            b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
            a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
            d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
            c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
            b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
            a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
            d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
            c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
            b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
            a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
            d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
            c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
            b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
            a=II(a,b,c,d,x[k+0], S41,0xF4292244);
            d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
            c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
            b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
            a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
            d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
            c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
            b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
            a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
            d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
            c=II(c,d,a,b,x[k+6], S43,0xA3014314);
            b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
            a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
            d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
            c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
            b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
            a=AddUnsigned(a,AA);
            b=AddUnsigned(b,BB);
            c=AddUnsigned(c,CC);
            d=AddUnsigned(d,DD);
        }

        var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);

        return temp.toLowerCase();
    }

3,设备检测

/*
    * 设备检测
    * @method _checkDevice
    * */
    function _checkDevice(){
        var system ={
            win : false,
            mac : false,
            xll : false
        },
        p = navigator.platform;
        system.win = p.indexOf("Win") == 0;
        system.mac = p.indexOf("Mac") == 0;
        system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
        if(system.win || system.mac || system.xll){
            return "pc";
        }else{
            return "ph";
        }
    }

 4,placeholder效果

    Utils.prototype.placeholder = function(InputId, preText) {
        var $input = $("#" + InputId);
        $input.css({
            color: "#969696",
            verticalAlign: "middle"
        }).focus(function(){
            if ($input.val() === preText) {
                $input.val("").css({
                    color: "#494949"
                });
            }
        }).blur(function(){
            if ($input.val() === "" || $input.val() === preText) {
                $input.val(preText).css({
                    color: "#969696"
                });
            }
        });
    };

5,插入js代码

    Utils.prototype.appendScript = function(src){
        var randNum = Math.random();
        var docmentHead = document.getElementsByTagName('head')[0];
        var infoScript= document.createElement("script");
        infoScript.type = "text/javascript";
        infoScript.src = src + "?r=" + randNum;
        docmentHead.appendChild(infoScript);
    };

6，跳锚点

/*跳錨點*/
    Utils.prototype.scrollAnchor= function(anchorName) {
        var $body = (window.opera) ? (document.compatMode == "CSS1Compat" ? $('html') : $('body')) : $('html,body');

        if (anchorName) {
            //        var $this = $('*[name="' + anchorName + '"]');
            var $this = $('#'+anchorName);
            var $this_top = $this.offset().top;
            $body.animate({ scrollTop: $this_top}, 600);
        } else {
            $body.animate({ scrollTop: 0}, 600);
        }
    };

7，选项卡

 /*通用选项卡函数，带回调
     * API 介绍
     * tag : 选项卡选择器， (必须)
     * curr ： 当前选中的选项卡样式， (最好填)
     * cont ：选项卡内容选择器，数量需和上面的tag个数一致，你懂的。 (必须)
     * more ： 更多按钮选择器，(可选)
     * ev ：触发事件，默认鼠标划过，(可选)
     * before: ev事件未被触发时执行的函数 （可选）
     * callbak ：回调函数，可以让你在每一次切换选项卡的时候做些你想做的事， (可选)
     */
    Utils.prototype._TAG= function(conf) {
        var tag = conf && conf.tag || '.tag',
            curr = conf && conf.curr || 'curr',
            cont = conf && conf.cont || '.tagCont',
            more = conf && conf.more || '.more',
            ev = conf && conf.ev || 'mouseover',
            time = conf && conf.time || 500,
            before = conf && conf.before,
            callback = conf && conf.callback;
        var $tag = $(tag),$cont = $(cont),$more = conf.more ? $(more) : $(document);
        $tag.eq(0).addClass(curr);
        $cont.eq(0).stop().show();
        before && before();
        $tag.on(ev,function(){
            var that = $(this);
            var i = that.index(tag);
            that.addClass(curr).siblings(tag).removeClass(curr);
            $cont.hide().eq(i).show();

            if (conf.more) {
                $more.attr('href',that.attr('url'));
            }
            callback && callback(that,i);
        });
    };

8，加入收藏

 /*
     * 加入收藏夾
     */
    Utils.prototype.addFavorite = function(url, title) {
        var sURL = url || location.href;
        var sTitle = title || document.title;
        var that = this;

        try {
            window.external.AddFavorite(sURL, sTitle);
        } catch (e) {
            try {
                window.sidebar.addPanel(sTitle, sURL, "");
            } catch (e) {
                that.dialog({
                    content: "加入收藏失敗，請使用Ctrl+D進行添加"
                });
            }
        }
    };