parse-query-string.js

function parseQueryString(qs) {
    qs = qs.replace(/\+/g, ' ');

    var params = {}, tokens,
        re = /[?&]:?([^=]+)=([^&]*)/g;

    while (tokens = re.exec(qs)) {
      // console.log(tokens);
        params[decodeURIComponent(tokens[1])]
            = decodeURIComponent(tokens[2]);
    }

    return params;
}

var qs = parseQueryString(window.location.search);