Use regexp to filter for question mark (?) parameter in url and add either ? or &

Question

I have this:

var searchString = action +  ?  + 'search=' + search + '&filter='

the action variable could either already have a ?parameter or could not have one.

therefore I need to test action if it already contains a ? and if so append &search. Otherwise I need to use ?search

Any idea how to solve that in an easy manner?

Answer 1

var searchString = action + (action.indexOf('?') != -1 ? '&' : '?') + 'search=' + search + '&filter=';

Answer 2

var searchString = action + ((action.indexOf('?') == -1) ? '?search=' : '&search=');

Or you can use the jquery Query Plug-in http://plugins.jquery.com/project/query-object