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

It's easy:

var variable_regex = "bar";
var some_string = "foobar";

some_string.match(variable_regex);

Just lose the //. If you want to use complex regexes, you can use string concatenation:

var variable_regex = "b.";
var some_string = "foobar";

alert (some_string.match("f.*"+variable_regex));