CODEWITHSUNDEEP
javascriptregex
Laetitia28
Laetitia28

Reputation: 115

Replace 2 characters inside a string in JavaScript

I have this string and I want to fill all the blank values with 0 between to , :

var initialString = 3,816,AAA3,aa,cc,bb,5.9,27,46,0.62,29,12,7,10,13.1,86,6.02,20,1.68,8,0.24,48,22,6.2,0.9,,,1,

I want this output :

var finalString = 3,816,AAA3,aa,cc,bb,5.9,27,46,0.62,29,12,7,10,13.1,86,6.02,20,1.68,8,0.24,48,22,6.2,0.9,0,0,1,0

I try to use replace

var newString = initialString.replace(/,,/g, ",0,").replace(/,$/, ",0");

But the finalString looks like this:
var initialString = 3,816,AAA3,aa,cc,bb,5.9,27,46,0.62,29,12,7,10,13.1,86,6.02,20,1.68,8,0.24,48,22,6.2,0.9,0,,1,0 Some coma are not replaced.

Can someone show me how to do it?

Upvotes: 0

Views: 63

Answers (2)

Nick
Nick

Reputation: 147146

You can match a comma which is followed by either a comma or end of line (using a forward lookahead) and replace it with a comma and a 0:

const initialString = '3,816,AAA3,aa,cc,86,6.02,20,1.68,8,0.24,48,22,6.2,0.9,,,1,';

let result = initialString.replace(/,(?=,|$)/g, ',0');

console.log(result)

Upvotes: 3

DecPK
DecPK

Reputation: 25398

using split and join

var str = "3,816,AAA3,aa,cc,bb,5.9,27,46,0.62,29,12,7,10,13.1,86,6.02,20,1.68,8,0.24,48,22,6.2,0.9,,,1,";
const result = str
  .split(",")
  .map((s) => (s === "" ? "0" : s))
  .join(",");
console.log(result);

Upvotes: 0

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