jQuery.parseParams - parse query string paramaters into an object

jquery.parseparams.js

/**
 * $.parseParams - parse query string paramaters into an object.
 */
(function($) {
var re = /([^&=]+)=?([^&]*)/g;
var decodeRE = /\+/g;  // Regex for replacing addition symbol with a space
var decode = function (str) {return decodeURIComponent( str.replace(decodeRE, " ") );};
$.parseParams = function(query) {
    var params = {}, e;
    while ( e = re.exec(query) ) { 
        var k = decode( e[1] ), v = decode( e[2] );
        if (k.substring(k.length - 2) === '[]') {
            k = k.substring(0, k.length - 2);
            (params[k] || (params[k] = [])).push(v);
        }
        else params[k] = v;
    }
    return params;
};
})(jQuery);

There is a larger debate going on here - http://stackoverflow.com/q/1131630/104380

one line deParams :)

function deParams(str) {
    return (str || document.location.search).replace(/(^\?)/,'').split("&").map(function(n){return n = n.split("="),this[n[0]] = n[1],this}.bind({}))[0];
}

PHPstorm inspection says this part is not quite ideal:
while ( e = re.exec(query) ) {
instead, it is better to use this:
while ((e = re.exec(query)) !== null) {

Same example in mozilla developer page: RegExp.prototype.exec()

A jQuery plugin https://github.com/AceMetrix/jquery-deparam