replace all characters with * in javascript code example

Example 1: replacing characters in string javascript

var myStr = 'this,is,a,test';
var newStr = myStr.replace(/,/g, '-');

console.log( newStr );  // "this-is-a-test"

Example 2: how to replace all characters in a string javascript

const string = "a, b, c, d, e, f";
string.replace(/,/g, '');
console.log(string) //a b c d e f