在IE5下的Javascript：
Array不支持push(),pop()；Function不支持apply()；String對象的replace方法不支持替換成一個處理函數。
使用下面的代碼就可修復上述方法在IE5下無效的問題。
/*
fix-ie5.js, version 1.0 (pre-release) (2005/05/15) x3
Copyright 2005, Dean Edwards
Web: http://dean.edwards.name/
This software is licensed under the CC-GNU LGPL
Web: http://creativecommons.org/licenses/LGPL/2.1/
*/
if (/MSIE 5.0/.test(navigator.userAgent)) new function() {
var $$apply = function($function, $object, $arguments) {
$function.apply($object, $arguments);
};
// fix String.replace
if (''.replace(/^/, String)) {
// preserve String.replace
var _stringReplace = String.prototype.replace;
// create String.replace for handling functions
var _functionReplace = function($expression, $replacement) {
var $match, $newString = "", $string = this;
while ($string && ($match = $expression.exec($string))) {
$newString += $string.slice(0, $match.index) + $$apply($replacement, this, $match);
$string = $string.slice($match.lastIndex);
}
return $newString + $string;
};
// replace String.replace
String.prototype.replace = function ($expression, $replacement) {
this.replace = (typeof $replacement == "function") ? _functionReplace : _stringReplace;
return this.replace($expression, $replacement);
};
}
// fix Function.apply
if (!Function.apply) {
var APPLY = "apply-" + Number(new Date);
$$apply = function(f, o, a) {
var r;
o[APPLY] = f;
switch (a.length) { // deconstruct for speed
