A brief introduction to the url parameter parse and build functions of JavaScript

The following editor will bring you a brief discussion of javascript’s url parameter parse and buildfunction. The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor and take a look.

Parse：

function getParam() {
    var param = new Object()
    var item = new Array();
    if (location.search == "") {
      return param;
    };
    var query = location.search.substring(1);                                                                   
    var list = query.split('&');
    for(var i = 0; i < list.length; i++) {
      item = list[i].split(&#39;=&#39;);
      if (typeof param[item[0]] == "undefined") {
        param[item[0]] = new Array();
      }
      param[item[0]].push(item[1]);
    };
    return param;
  };

Build：

function getUrlByParam(param) {
    var url = "";
    for (field in param) {
      for (index in param[field]) {
        url += "&" + field + "=" + param[field][index];
      };
    };
    return url == "" ? url : url.substring(1);
  };

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