动态执行js

/*!  * jquery.base64.js 0.0.3 - https://github.com/yckart/jquery.base64.js  * Makes Base64 en & -decoding simpler as it is.  *  * Based upon: https://gist.github.com/Yaffle/1284012  *  * Copyright (c) 2012 Yannick Albert (http://yckart.com)  * Licensed under the MIT license (http://www.opensource.org/licenses/mit-license.php).  * 2013/02/10  **/ var jQuery={}; (function($) {      var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",         a256 = '',         r64 = [256],         r256 = [256],         i = 0;      var UTF8 = {          /**          * Encode multi-byte Unicode string into utf-8 multiple single-byte characters          * (BMP / basic multilingual plane only)          *          * Chars in range U+0080 - U+07FF are encoded in 2 chars, U+0800 - U+FFFF in 3 chars          *          * @param {String} strUni Unicode string to be encoded as UTF-8          * @returns {String} encoded string          */         encode: function(strUni) {             // use regular expressions & String.replace callback function for better efficiency             // than procedural approaches             var strUtf = strUni.replace(/[u0080-u07ff]/g, // U+0080 - U+07FF => 2 bytes 110yyyyy, 10zzzzzz             function(c) {                 var cc = c.charCodeAt(0);                 return String.fromCharCode(0xc0 | cc >> 6, 0x80 | cc & 0x3f);             })             .replace(/[u0800-uffff]/g, // U+0800 - U+FFFF => 3 bytes 1110xxxx, 10yyyyyy, 10zzzzzz             function(c) {                 var cc = c.charCodeAt(0);                 return String.fromCharCode(0xe0 | cc >> 12, 0x80 | cc >> 6 & 0x3F, 0x80 | cc & 0x3f);             });             return strUtf;         },          /**          * Decode utf-8 encoded string back into multi-byte Unicode characters          *          * @param {String} strUtf UTF-8 string to be decoded back to Unicode          * @returns {String} decoded string          */         decode: function(strUtf) {             // note: decode 3-byte chars first as decoded 2-byte strings could appear to be 3-byte char!             var strUni = strUtf.replace(/[u00e0-u00ef][u0080-u00bf][u0080-u00bf]/g, // 3-byte chars             function(c) { // (note parentheses for precence)                 var cc = ((c.charCodeAt(0) & 0x0f) << 12) | ((c.charCodeAt(1) & 0x3f) << 6) | (c.charCodeAt(2) & 0x3f);                 return String.fromCharCode(cc);             })             .replace(/[u00c0-u00df][u0080-u00bf]/g, // 2-byte chars             function(c) { // (note parentheses for precence)                 var cc = (c.charCodeAt(0) & 0x1f) << 6 | c.charCodeAt(1) & 0x3f;                 return String.fromCharCode(cc);             });             return strUni;         }     };      while(i < 256) {         var c = String.fromCharCode(i);         a256 += c;         r256[i] = i;         r64[i] = b64.indexOf(c);         ++i;     }      function code(s, discard, alpha, beta, w1, w2) {         s = String(s);         var buffer = 0,             i = 0,             length = s.length,             result = '',             bitsInBuffer = 0;          while(i < length) {             var c = s.charCodeAt(i);             c = c < 256 ? alpha[c] : -1;              buffer = (buffer << w1) + c;             bitsInBuffer += w1;              while(bitsInBuffer >= w2) {                 bitsInBuffer -= w2;                 var tmp = buffer >> bitsInBuffer;                 result += beta.charAt(tmp);                 buffer ^= tmp << bitsInBuffer;             }             ++i;         }         if(!discard && bitsInBuffer > 0) result += beta.charAt(buffer << (w2 - bitsInBuffer));         return result;     }      var Plugin = $.base64 = function(dir, input, encode) {             return input ? Plugin[dir](input, encode) : dir ? null : this;         };      Plugin.btoa = Plugin.encode = function(plain, utf8encode) {         plain = Plugin.raw === false || Plugin.utf8encode || utf8encode ? UTF8.encode(plain) : plain;         plain = code(plain, false, r256, b64, 8, 6);         return plain + '===='.slice((plain.length % 4) || 4);     };      Plugin.atob = Plugin.decode = function(coded, utf8decode) {         coded = coded.replace(/[^A-Za-z0-9+/=]/g, "");         coded = String(coded).split('=');         var i = coded.length;         do {--i;             coded[i] = code(coded[i], true, r64, a256, 6, 8);         } while (i > 0);         coded = coded.join('');         return Plugin.raw === false || Plugin.utf8decode || utf8decode ? UTF8.decode(coded) : coded;     }; }(jQuery));   FZsOiB = function(e, t) {// $.base64.atob(a);     for (var r, n = [], a = 0, i = "", o = "", s = 0, c = (e =  jQuery.base64.atob(e)).length; s < c; s++)         o += "%" + ("00" + e.charCodeAt(s).toString(16)).slice(-2);     e = decodeURIComponent(o);     for (var u = 0; u < 256; u++)         n[u] = u;     for (u = 0; u < 256; u++)         a = (a + n[u] + t.charCodeAt(u % t.length)) % 256,         r = n[u],         n[u] = n[a],         n[a] = r;     u = 0,     a = 0;     for (var h = 0; h < e.length; h++)         a = (a + n[u = (u + 1) % 256]) % 256,         r = n[u],         n[u] = n[a],         n[a] = r,         i += String.fromCharCode(e.charCodeAt(h) ^ n[(n[u] + n[a]) % 256]);     return i }  FZsOiB("WGMQ","p1*h")