Using a variable within a regular expression (jQuery) [duplicate]

Question

I'm attempting to replace all instances of a string within a variable, but the string I'm looking for is also a variable. How can I add this string within a regex?

var myVar = HelloWorldHello;
var myString = Hello;

myVar = myVar.replace(/\\' + myString + '/g, '');

The above doesn't seem to be working. I need to end up with World.

prasad's answer answered my question far clearer than either of the linked questions that I am an apparent duplicate of. — mpdc
– mpdc, Commented Apr 26, 2017 at 8:48

prasanth · Accepted Answer · 2017-04-26 08:45:15Z

1

use with new RegExp('string', 'g')

var myVar = 'HelloWorldHello';
var myString = 'Hello';

myVar = myVar.replace(new RegExp(myString, 'g'), '');
console.log(myVar)

answered Apr 26, 2017 at 8:45

prasanth

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