replace letter in string javascript code example

Example 1: javascript replace string

var str = "JavaScript replace method test";
var res = str.replace("test", "success");  
//res = Javscript replace method success

Example 2: replacing characters in string javascript

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

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

Example 3: js replace characters in a string

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

Example 4: str replace javascript all

str.replace(/abc/g, '');