在ActionScript正则表达式中转义多个字符 [英] Escaping multiple characters in an ActionScript regular expression

问题描述

是否有特殊的字符串，例如Java中的\Q和\E？
谢谢。

Are there special strings for that, such as \Q and \E in Java? Thanks.

推荐答案

据我所知，没有等同于 \Q 和 \E 在AS3 RegExp中。您可以做的与相同的事情 ：转义在 RegExp 模式中使用的特殊字符：

As far as I know there is no equivalent to \Q and \E in AS3 RegExp. What you can do is the same thing you would in Javascript: escape special characters for use within a RegExp pattern:

function escapeForRegExp(s:String):String {
    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
}

// Example:
var s:String = "Some (text) with + special [regex] chars?";
var r:RegExp = new RegExp("^" + escapeForRegExp(s), "g");

// Same as if you wrote the pattern with escaped characters:
/^Some \(text\) with \+ special \[regex\] chars\?/g

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