如何在JavaScript中编写包含括号的正则表达式？

Question

I want to get data from JavaScript code which is:

var _pd =_RP("blablabla");

When I use:

RegExp('var _pd =_RP(.*?);').exec('var _pd =_RP("blablabla");');

I can get ("blablabla") . But what I want to get is just blablabla .

So I tried:

'var _pd =_RP\("(.*?)"\);'

But I can't get what I want and it just returns null value.

How can I get the raw data (in this case just blablabla )?

Answer 1

You need to escape the backslashes in the regex string:

 let result = RegExp('var _pd =_RP\\\\("(.*?)"\\\\);').exec('var _pd =_RP("blablabla");'); console.log(result); 

Alternatively, you can use a regex literal:

 let result = /var _pd =_RP\\("(.*?)"\\);/.exec('var _pd =_RP("blablabla");'); console.log(result);