regex panrams javascrit code example

Example 1: javascript use variable regex

// CREATE A REGEXP object
var replace = "regex";
var re = new RegExp(replace,"g");
//then use
"mystring".replace(re, "newstring")

Example 2: using regex in javascript

//Adding '/' around regex
var regex = /\s/g;
//or using RegExp
var regex = new RegExp("\s", "g");