//重写split 用于解决IE7，IE8，IE9的split的兼容性（panda-2016-06-16）
var split;split = split || function (undef) {var nativeSplit = String.prototype.split,compliantExecNpcg = /()??/.exec("")[1] === undef, self;self = function (str, separator, limit) {if (Object.prototype.toString.call(separator) !== "[object RegExp]") {return nativeSplit.call(str, separator, limit);}var output = [],flags = (separator.ignoreCase ? "i" : "") +(separator.multiline ? "m" : "") +(separator.extended ? "x" : "") + // Proposed for ES6(separator.sticky ? "y" : ""), // Firefox 3+lastLastIndex = 0,separator = new RegExp(separator.source, flags + "g"),separator2, match, lastIndex, lastLength;str += ""; if (!compliantExecNpcg) {separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);}limit = limit === undef ?-1 >>> 0 : // Math.pow(2, 32) - 1limit >>> 0; // ToUint32(limit)while (match = separator.exec(str)) {lastIndex = match.index + match[0].length;if (lastIndex > lastLastIndex) {output.push(str.slice(lastLastIndex, match.index));if (!compliantExecNpcg && match.length > 1) {match[0].replace(separator2, function () {for (var i = 1; i < arguments.length - 2; i++) {if (arguments[i] === undef) {match[i] = undef;}}});}if (match.length > 1 && match.index < str.length) {Array.prototype.push.apply(output, match.slice(1));}lastLength = match[0].length;lastLastIndex = lastIndex;if (output.length >= limit) {break;}}if (separator.lastIndex === match.index) {separator.lastIndex++;}}if (lastLastIndex === str.length) {if (lastLength || !separator.test("")) {output.push("");}} else {output.push(str.slice(lastLastIndex));}return output.length > limit ? output.slice(0, limit) : output;};String.prototype.split = function (separator, limit) {return self(this, separator, limit);};return self;}();