How to pass a variable into regex in jQuery/Javascript

Question

Is there a way to pass a variable into a regex in jQuery/Javascript?

I wanna do something like:

var variable_regex = \"bar\";
var some_string = \"foo         


        

Answer 1

Javascript doesn't support interpolation like Ruby -- you have to use the RegExp constructor:

var aString = "foobar";
var pattern = "bar";

var matches = aString.match(new RegExp(pattern));