deparam javascript

function parseParams(str) {
    return str.split('&').reduce(function (params, param) {
        var paramSplit = param.split('=').map(function (value) {
            return decodeURIComponent(value.replace(/\+/g, ' '));
        });
        params[paramSplit[0]] = paramSplit[1];
        return params;
    }, {});
}function params_unserialize(p){
var ret = {},
    seg = p.replace(/^\?/,'').split('&'),
    len = seg.length, i = 0, s;
for (;i<len;i++) {
    if (!seg[i]) { continue; }
    s = seg[i].split('=');
    ret[s[0]] = s[1];
}
return ret;}