how to replace a character 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: js replace characters in a string

var str = "Original string!";
var str = str.replace("Original", "New");