Question

testString = "something://something/task?type=Checkin";

patt = new RegExp("something\/(\w*)\?");
match = patt.exec(testString);
document.querySelector('#resultRegexp').innerHTML = match[1];

I want to capture task So shouldn’t this RegExp work?

I am grabbing any alphanumeric character up until the question mark… and capturing it.

http://jsfiddle.net/h4yhc/2/

Answer 1

You would need to escape the slash in regex literals, and the backslash in string literals which you create regexes from:

var patt = /something\/(\w*)\?/g;
// or
var patt = new RegExp("something/(\\w*)\\?", 'g');

I strongly recommend the first version, it is more readable.