Javascript Regex Replace String with Special Character

Question

I have string with value = "[1] a [2] b [3] c" in Javascript. I would like to replace it to "a b c".

My question is how to do it in Javascript by using Regex?

I have tried the following but no luck:

var strText = "[1] a [2] b [3] c";
var strTextReplaced = strText.replace(new RegExp("\[/d\] ", ""), "");

falsetru · Accepted Answer · 2013-08-17 09:06:45Z

2

Using regular expression /\[\d+\]/g:

> var value = "[1] a [2] b [3] c";
> value.replace(/\[\d+\]/g, '')
" a  b  c"

\d instead of /d.
Escape [ and ].

Use /\[\d+\]\s*/ if you want remove extra spaces.

answered Aug 17, 2013 at 9:06

falsetru

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4 Comments

Toto Over a year ago

I'd use /\[\d+\]\s*/ to remove extra spaces.

falsetru Over a year ago

@M42, I mentioned that. Thank you.

Toto Over a year ago

rigth. I give you +1.

fredden Over a year ago

I think that last asterisk should be a plus. The original request said they wanted to match '[1] ', and this proposition will also match '[1]' without the trailing space (although given it's a greedy match, you'll likely not notice this during testing).

Brigand · Accepted Answer · 2013-08-17 09:10:48Z

0

It's \d instead of /d, and you need to escape the special characters with \ as well. Also, you need the "g" or global flag which allows more than one replacement.

In JavaScript the \ has special meaning. So you need to escape it as well.

strText.replace(new RegExp("\\[\\d\\]", "g"), "")

Because of the nusiance of that, JavaScript has this shorthand version of the above.

strText.replace(/\[\d\]/g, "")

Technically you only need to escape the [, but not the ].

strText.replace(/\[\d]/g, "")

answered Aug 17, 2013 at 9:10

Brigand

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