CODEWITHSUNDEEP
javascript
Ryan
Ryan

Reputation: 175

How to insert space between a number and a character /string using regex in javascript

How to insert space between a number and string / character

I have a regex question.

How do I insert a space between a numeric character and a letter.

For example: 

var sentence = "It contains 37mg of salt"

I want the output to be: 

It contains 37 mg of salt.

Upvotes: 0

Views: 64

Answers (2)

Maheer Ali
Maheer Ali

Reputation: 36564

You can match the number using (\d+) and add a white space in the replaced string in front of the matched number

var sentence = "It contains 37mg of salt"
let res = sentence.replace(/(\d+)/g,"$1 ")
console.log(res)

Upvotes: 2

Snow
Snow

Reputation: 4097

Match a number, lookahead for a letter, then replace with the number with a space after it:

var sentence = "It contains 37mg of salt";
const result = sentence.replace(/\d(?=[a-z])/i, '$& ');
console.log(result);

Upvotes: 4

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