如何使用javascript来转义正则表达式特殊字符?(复制)

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How to escape regular expression in javascript? [duplicate] 8 answers
如何在javascript中转义正则表达式?(重复)8的答案

I need to escape the regular expression special characters using java script.How can i achieve this?Any help should be appreciated.

我需要使用java脚本转义正则表达式特殊字符。我怎样才能做到这一点呢?任何帮助都应表示感谢。

Thanks for your quick reply.But i need to escape all the special characters of regular expression.I have try by this code,But i can't achieve the result.

谢谢你的快速回复。但是我需要避开正则表达式的所有特殊字符。我用这段代码试过了，但结果还是不行。

RegExp.escape=function(str)
            {
                if (!arguments.callee.sRE) {
                    var specials = [
                        '/', '.', '*', '+', '?', '|',
                        '(', ')', '[', ']', '{', '}', '\\'
                    ];
                    arguments.callee.sRE = new RegExp(
                    '(\\' + specials.join('|\\') + ')', 'gim'
                );
                }
                return str.replace(arguments.callee.sRE, '\\$1');

            }

function regExpFind() {
            <%--var regex = new RegExp("\\[munees\\]","gim");--%>
                    var regex= new RegExp(RegExp.escape("[Munees]waran"));
                    <%--var regex=RegExp.escape`enter code here`("[Munees]waran");--%>
                    alert("Reg : "+regex);
                }

What i am wrong with this code?Please guide me.

这段代码有什么问题吗?请指导我。

3 个解决方案

#1

292

Use the \ character to escape a character that has special meaning inside a regular expression.

使用\字符来转义正则表达式中具有特殊含义的字符。

To automate it, you could use this:

要实现自动化，你可以这样做:

function escapeRegExp(text) {
  return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
}

Update: There is now a proposal to standardize this method, possibly in ES2016: https://github.com/benjamingr/RegExp.escape

更新:现在有一个关于标准化这个方法的建议，可能在ES2016中:https://github.com/benjamingr/RegExp.escape

Update: The abovementioned proposal was rejected, so keep implementing this yourself if you need it.

更新:以上建议已被拒绝，如有需要，请自行执行。

#2

Use the backslash to escape a character. For example:

使用反斜杠来转义字符。例如:

/\\d/

This will match \d instead of a numeric character

这将匹配\d而不是数字字符

#3

With \ you escape special characters

你可以逃避特殊的角色。

Escapes special characters to literal and literal characters to special.

将特殊字符转义为文字字符，将文字字符转义为特殊字符。

E.g: /(s)/ matches '(s)' while /(\s)/ matches any whitespace and captures the match.

E。g: /(s)/ match '(s)' while /(\s)/匹配任何空格并捕获匹配。

Source: http://www.javascriptkit.com/javatutors/redev2.shtml

来源:http://www.javascriptkit.com/javatutors/redev2.shtml

#1

292