how to remove comma from end of string in javascript code example

Example 1: remove commas from string javascript

var stringWithCommas = 'a,b,c,d';
var stringWithoutCommas = stringWithCommas.replace(/,/g, '');
console.log(stringWithoutCommas);

Example 2: remove commas from string javascript

var purpose = "I, Just, want, a, quick, answer!";

// Removing the first occurrence of a comma
var result = purpose.replace(",", "");

// Removing all the commas
var result = purpose.replace(/,/g, "");

Example 3: remove last comma from string javascript

str = str.replace(/,\s*$/, "");