Replace number with number and special characters

Question

I want to replace number with special characters and numbers from a string.

Ex."3 6 8 47" and expected output is " $3 $6 $8 $47 ".

I can use replace method and implemented like below:

var content = "1 3 4";
content = content.replace(/1/g, " $1 ");
console.log(content); // $1 3 4

Here, I can replace only one number and I do want to write for each number.

Or I can use split method and add $ to each items of array and join.

I'm looking for some generic replace method to achieve this.

https://stackoverflow.com/questions/1144783/how-to-replace-all-occurrences-of-a-string-in-javascript — Alice, May 26 '17 at 09:21

score 8 · Answer 1 · answered May 26 '17 at 09:19

8

You can use \d+ to match one or more digits. Inside replacement part, $& will refer to the matched string. As $ has special meaning in regex replacement part, to show $ as literal, you need to use $$.

.replace(/\d+/g, '$$$&')

console.log('1 2 3'.replace(/\d+/g, '$$$&'));

More info on MDN

answered May 26 '17 at 09:19

Tushar

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Thanks for the quick reply. But input can be any length., how to fix that? – Ranjit Kumar May 26 '17 at 09:23
It will work with input of any length – rishipuri May 26 '17 at 09:24
@RanjitKumar The regex already covers numbers of any length (except zero)? – Bergi May 26 '17 at 09:24
I got it.. Awesome.. Thanks all.. – Ranjit Kumar May 26 '17 at 09:25

score 1 · Answer 2 · edited May 26 '17 at 09:28

1

As an alternative, you can use the callBack of replace function if you want. It would give you a provision to modify the matched string even more.

let replaced = "3 6 8 47".replace(/\d+/g, (str) => ("$" + str));

edited May 26 '17 at 09:28

Mistalis

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answered May 26 '17 at 09:26

Rajaprabhu Aravindasamy

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Replace number with number and special characters

2 Answers2