JS parses url parameters into objects

// url参数解析
function getUrlkey(url) {
  var params = {};
  var urls = url.split("?");                  console.log('1_分割url:', urls)
  var arr = urls[1].split("&");               console.log('2_分割urls[1]:', arr)
  for (var i = 0, l = arr.length; i < l; i++) {
    var a = arr[i].split("=");                console.log(&#39;3_遍历 arr 并分割后赋值给a:&#39;, a[0], a[1])
    params[a[0]] = a[1];                      console.log(&#39;4_a给params对象赋值:&#39;, params)
  }                                           console.log(&#39;5_结果:&#39;, params)
  return params;
}