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	 1.×Ôhttp://jorkin.reallydo.com/article.asp?id=275
µÚÒ»´Î·¢ÏÖJavaScriptÖÐreplace() ·½·¨Èç¹ûÖ±½ÓÓÃstr.replace("-","!") Ö»»áÌæ»»µÚÒ»¸öÆ¥ÅäµÄ×Ö·û. 
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replace() 
The replace() method returns the string that results when you replace text matching its first argument 
(a regular expression) with the text of the second argument (a string). 
If the g (global) flag is not set in the regular expression declaration, this method replaces only the first 
occurrence of the pattern. For example, 
var s = "Hello. Regexps are fun.";s = s.replace(/\./, "!"); // replace first period with an exclamation pointalert(s);
produces the string “Hello! Regexps are fun.” Including the g flag will cause the interpreter to 
perform a global replace, finding and replacing every matching substring. For example, 
var s = "Hello. Regexps are fun.";s = s.replace(/\./g, "!"); // replace all periods with exclamation pointsalert(s);
yields this result: “Hello! Regexps are fun!” 
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string.replace(/reallyDo/g, replaceWith);
string.replace(new RegExp(reallyDo, 'g'), replaceWith);
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<mce:script type="text/javascript"><!--
String.prototype.replaceAll = function(reallyDo, replaceWith, ignoreCase) {
    if (!RegExp.prototype.isPrototypeOf(reallyDo)) {
        return this.replace(new RegExp(reallyDo, (ignoreCase ? "gi": "g")), replaceWith);
    } else {
        return this.replace(reallyDo, replaceWith);
    }
}
// --></mce:script>
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ÔÎĵØÖ·: http://jorkin.reallydo.com/article.asp?id=275
 
2.×Ôhttp://yueguangyuan.javaeye.com/blog/31744
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