Get URL parameters from String

getURLParamsFromString.js

/**
 * Get URL parameters from String
 * source: https://css-tricks.com/snippets/javascript/get-url-variables/
 * @param  {String} url The URL
 * @return {Object}     The URL parameters
 */
var getParams = function (url) {
    var params = {};
    var parser = document.createElement('a');
    parser.href = url;
    var query = parser.search.substring(1);
    if (query) {
        var vars = query.split('&');
        for (var i = 0; i < vars.length; i++) {
            var pair = vars[i].split('=');
            params[pair[0]] = decodeURIComponent(pair[1]);
        }
    }
    return params;
};
// Usage:
// getParams(window.location.href); // from window URL
// getParams('http://some.url?page=1&id=2'); // from String

The above is a bit oldskool.

A new ES6 way would be e.g.:

function getUrlParams(search) {
  let hashes = search.slice(search.indexOf('?') + 1).split('&')
  return hashes.reduce((params, hash) => {
      let [key, val] = hash.split('=')
      return Object.assign(params, {[key]: decodeURIComponent(val)})
  }, {})
}

There is a better (native way) with URLSearchParams:

See: https://developers.google.com/web/updates/2016/01/urlsearchparams?hl=en

but (IE) support is lacking... (Polyfilled)