CODEWITHSUNDEEP
javascriptregexreplace
Joe Berg
Joe Berg

Reputation: 381

Replace comma if in between numbers with javascript

I am trying to replace each occurrence of a comma ',' but only if it is found in between two digits/numbers.

E.g. "Text, 10,10 text, 40 text, 10,60" should be returned as "Text, 1010 text, 40 text, 1060", where I replace the comma found between 10,10 and 10,60 but keep the commas after the text.

var text = "Text, 10,10 text, 40 text, 10,60";
var nocomma = text.replace(/,/g, '');
console.log(nocomma);

Upvotes: 4

Views: 1162

Answers (3)

mshockman
mshockman

Reputation: 123

Your going to want match your digits and reference them in your replacement text using $n in the string where n is the index of your substring match. The following should work. You can see Mozilla for more information on replace and how it works.

let text = "Text, 10,10 text, 40 text, 10,60",
	result = text.replace(/(\d),(\d)/g, '$1$2');
	
console.log(result);

Upvotes: 1

The fourth bird
The fourth bird

Reputation: 163207

If there can also be multiple occurrences of digits followed by a comma, you could use a single capturing group matching 1+ digits (\d+)

Then match a comma and use positive lookahead (?= to assert what is directly to the right is a digit \d.

In the replacement use the first capturing group $1

(\d+),(?=\d)

Regex demo

var text = "Text, 10,10 text, 40 text, 10,60 or 10,10,10";
var nocomma = text.replace(/(\d+),(?=\d)/g, '$1');
console.log(nocomma);

Upvotes: 1

Code Maniac
Code Maniac

Reputation: 37755

You can use capturing groups and replace

var text = "Text, 10,10 text, 40 text, 10,60";
var nocomma = text.replace(/(\d),(\d)/g, '$1$2');

console.log(nocomma);

If you're using modern browser which support both lookbehind you can use this too

str.replace(/(?<=\d),(?=\d)/g,'')

Upvotes: 6

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