Question

Here’s my url string, I am trying to break down the parameters and get the value for “q” parameter.

a) http://myserver.com/search?q=bread?topic=14&sort=score
b) http://myserver.com/search?q=bread?topic=14&sort=score&q=cheese

how do i use Jquery/JavaScript to get "q" value?

for case a), i can use string split or use jquery getUrlParam to get q value = bread

for case b), when there are duplicates how do i retrieve the q value at the end, when there are multiple “q” params

Answer 1

in pure javascript, try

function getParameterByName(name) {

    var match = RegExp('[?&]' + name + '=([^&]*)')
                    .exec(window.location.search);

    return match && decodeURIComponent(match[1].replace(/\+/g, ' '));

}

Reference

in jQuery see this plugin

https://github.com/allmarkedup/jQuery-URL-Parser

UPDATE

when u get array of all query string then to remove duplicate from an array via jQuery try unique or see this plugin

http://plugins.jquery.com/plugin-tags/array-remove-duplicates