Javascript Regex replace []

Question

I am trying to replace the following in a Regex:-

[company-name]

Using Regex I would expect I could use was to use:-

str.replace(/[company-name]/g, 'Google');

But I know that the regex will replace any matching letter.

How am I able to replace the [company-name] with Google using JS Regex?

Thanks in advance for your help.

what is your example input string `str` value and what output of that string you wanna get? — Kamil Kiełczewski, Jan 22 '19 at 12:05
Literal square brackets need to be escaped. See https://www.regular-expressions.info/characters.html#special — Phil, Jan 22 '19 at 12:05
You need to escape the brackets with \ since they have a meaning in regexps. Though in this case using regexps seems overkill if it’s just a string replace. — Sami Kuhmonen, Jan 22 '19 at 12:05
`[]` are meta characters. You need to escape them. `str.replace(/\[company-name\]/g, 'Google')` — adiga, Jan 22 '19 at 12:06

score 1 · Answer 1 · edited Jan 22 '19 at 12:11

1

You need to escape the starting [ as well, in this case as they are special characters too:

var str = "I am from [company-name]!";
console.log(str.replace(/\[company-name]/gi, "Google"));

str = "[company-name]'s awesome!";
console.log(str.replace(/\[company-name]/gi, "Google"));

edited Jan 22 '19 at 12:11

Phil

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answered Jan 22 '19 at 12:06

Praveen Kumar Purushothaman

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Nick Parsons · Accepted Answer · 2019-01-22T12:25:25.477

But I know that the regex will replace any matching letter.

This is only the case because you have encapsulated your characters in a character class by using [ and ]. In order to treat these as normal characters, you can escape these using \ in front of your special characters:

str.replace(/\[company-name\]/g, 'Google');

See working example below:

const str = "[company-name]",
res = str.replace(/\[company-name\]/g, 'Google');
console.log(res);

score 0 · Answer 3 · edited Jan 22 '19 at 13:40

0

You should escape special characters like square brackets in this case. Just use:

str.replace(/\[company-name\]/g, 'Google');

edited Jan 22 '19 at 13:40

lviggiani

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answered Jan 22 '19 at 12:07

Ernesto Stifano

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score 0 · Answer 4 · answered Jan 22 '19 at 12:08

0

you could do it this way :

var txt = "So I'm working at [company-name] and thinking about getting a higher salary."
var pattern = /\[.+\]/g;
console.log(txt.replace(pattern, "Google"))

answered Jan 22 '19 at 12:08

Alexandre Elshobokshy

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Javascript Regex replace []

4 Answers4