Using a variable within a regular expression (jQuery)

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.

http://stackoverflow.com/questions/13683606/replace-all-instances-in-string-with-a-variable-as-the-search-javascript — Mohamed-Yousef, Apr 26 '17 at 08:42
prasad's answer answered my question far clearer than either of the linked questions that I am an apparent duplicate of. — mpdc, Apr 26 '17 at 08:48

score 1 · Accepted Answer · answered Apr 26 '17 at 08:45

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 '17 at 08:45

prasanth

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Using a variable within a regular expression (jQuery)

1 Answers1