修复ueditor百度编辑器在IE8下shCore.js报错'undefined'错误的问题

ueditor在IE8下点击任意文本框报脚本错误

错误问题：
在IE8下出现脚本错误 'undefined'为空或不是对象 的问题



出现问题的文件为：
shCore.js
行数：299行

文件路径：ueditor\third-party\SyntaxHighlighter\shCore.js

报错的代码为：
299行

real.replace.call(str.toString().slice(match.index), r2, function () {
for (var i = 1; i < arguments.length - 2; i++) {
if (arguments[i] === undefined)
match[i] = undefined;
}
});

错误原因为：299行中的
str.toString().slice(match.index)

传递进来的str变量未经过判断

在函数开始处增加

if(str!==undefined) 既可以修复该问题

RegExp.prototype.exec = function (str) {
if(str!==undefined){

var match = real.exec.apply(this, arguments),
name, r2;
if (match) {
// Fix browsers whose `exec` methods don't consistently return `undefined` for
// nonparticipating capturing groups
if (!compliantExecNpcg && match.length > 1 && indexOf(match, "") > -1) {
r2 = RegExp(this.source, real.replace.call(getNativeFlags(this), "g", ""));
// Using `str.slice(match.index)` rather than `match[0]` in case lookahead allowed
// matching due to characters outside the match
real.replace.call(str.toString().slice(match.index), r2, function () {
for (var i = 1; i < arguments.length - 2; i++) {
if (arguments[i] === undefined)
match[i] = undefined;
}
});
}
// Attach named capture properties
if (this._xregexp && this._xregexp.captureNames) {
for (var i = 1; i < match.length; i++) {
name = this._xregexp.captureNames[i - 1];
if (name)
match[name] = match[i];
}
}
// Fix browsers that increment `lastIndex` after zero-length matches
if (!compliantLastIndexIncrement && this.global && !match[0].length && (this.lastIndex > match.index))
this.lastIndex--;
}
return match;
}
};

原文链接： 枫叶博客：http://www.9it.me/article-9.html