javascript - 如何使用javascript转义正则表达式特殊字符？ [重复](How to escape regular expression special characters using javascript? [duplicate])

Question

This question already has an answer here:(这个问题在这里已有答案：)

Is there a RegExp.escape function in Javascript?(Javascript中是否有RegExp.escape函数？) 13 answers(13个答案)

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。如何实现这一点？任何帮助都应该被理解。)

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.(感谢您的快速回复。但我需要逃避正则表达式的所有特殊字符。我已经尝试了这段代码，但我无法达到结果。) 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.(这段代码我错了什么？请指导我。)   ask by Muneeswaran Balasubramanian translate from so

Answer 1

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:(要自动化它，您可以使用：) 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：现在有一个标准化此方法的提议，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 ：上述提案被拒绝，因此如果您需要，请继续自行实施。)