Replace certain strings globaly [duplicate]

Question

Sorry, this sounds very basic, but I really can't find on Google.

In order to replace contents in a string globally, you can use things like...

 a.replace(/blue/g,'red')

But sometimes you need to replace characters that's not compatible with the example above, for example, the character ")"

So, this will fail...

const a ="Test(123)" a = a.replace(/(/g, '') VM326:1 Uncaught SyntaxError: Invalid regular expression: /(/: Unterminated group

How to replace string of characters like that ? at :1:7

Does this answer your question? How to escape regular expression special characters using javascript? — jonrsharpe
– jonrsharpe, Commented Dec 13, 2019 at 11:44

Kaushik · Accepted Answer · 2019-12-13 11:51:26Z

The special regular expression characters are:

. \ + * ? [ ^ ] $ ( ) { } = ! < > | : -

const a ="Test(123)"; console.log(a.replace(/\(/g, ''));

you need to use the escape char \ for this. there are set of char which need to be escaped in this replace(regex)

a.replace(/\(/g, '');

Find a full details here at MDN

Ali Abbas · Accepted Answer · 2019-12-13 11:47:23Z

you need to escape the ( with \ in a new variable because a is const and it will work

var b = a.replace(/\(/g, '');

for more practicing use this site regExr

2 Answers 2