JavaScript is simulated to implement jsonp

function prescript(s) {
    if (s.cache === undefined) {
      s.cache = false;
    }
    if (s.crossDomain) {
      s.type = "GET";
    }
  }


  function prejsonp(s, originalSettings, jqXHR) {
    //  Name the callback function 
    var callbackName = s.jsonpCallback
    s.url += (/(?:)/.test(s.url) ? "&" : "?") + s.jsonp + "=" + callbackName;
    //  The script executes and USES a data converter to retrieve it json
    //  Data is provided to the code acquisition server 
    s.getData = function() {
      if (!responseContainer) {
        jQuery.error(callbackName + " was not called");
      }
      return responseContainer[0];
    };
    // Modification handling mechanism 
    s.dataTypes[0] = "json";
    //  create 1 A global function 
    overwritten = window[callbackName];
    // Used to collect data from the server 
    window[callbackName] = function() {
      responseContainer = arguments;
    };

    return "script";
  }

  /**
   * jsonp Preprocessing 
   */
  function inspectPrefiltersOrTransportsA(options, originalOptions, jqXHR) {
    // pretreatment jsonp
    var dataTypeOrTransport = prejsonp(options, originalOptions, jqXHR)
    // expand dataTypes
    options.dataTypes.unshift(dataTypeOrTransport);
    // pretreatment script type 
    prescript(options)
  }


  /**
   *  The dispenser 
   * @return {[type]} [description]
   */
  function inspectPrefiltersOrTransportsB(s, originalOptions, jqXHR) {
    return {
      send: function(_, complete) {
        var script = jQuery("<script>").prop({
          async: true,
          charset: s.scriptCharset,
          src: s.url
        }).on(
          "load error",
          callback = function(evt) {
            script.remove();
            callback = null;
            if (evt) {
              complete()
            }
          }
        );
        //<script async="" src="http://192.168.1.113:8080/github/jQuery/jsonp.php
        document.head.appendChild(script[0]);
      }
    }
  }

  /**
   *  simulation ajax the  jsonp request 
   * @param {[type]} options [description]
   * @return {[type]}     [description]
   */
  function createAjax(options) {

    if (typeof url === "object") {
      options = url;
      url = undefined;
    }

    options = options || {};

    /**
     *  parameter 
     * jQuery.ajaxSetup  Is the default parameter 
     * @type {[type]}
     */
    var s = jQuery.ajaxSetup({}, options);

    // Deferreds
    //  Asynchronous mechanisms 
    var deferred = jQuery.Deferred();
    var completeDeferred = jQuery.Callbacks("once memory");

    /**
     *  Actual returned ajax object 
     * @type {Object}
     */
    var jqXHR = {}

    //  the jqXHR Transformation of object promise Object, join complete , success , error methods 
    deferred.promise(jqXHR).complete = completeDeferred.add;
    // The alias 
    jqXHR.success = jqXHR.done;
    jqXHR.error = jqXHR.fail;

    s.dataTypes = jQuery.trim(s.dataType || "*").toLowerCase().match(/(?:)/) || [""];

    // pretreatment 
    inspectPrefiltersOrTransportsA(s, options, jqXHR);

    for (i in {
      success: 1,
      error: 1,
      complete: 1
    }) {
      jqXHR[i](s[i]);
    }

    /**
     *  The dispenser 
     */
    transport = inspectPrefiltersOrTransportsB(s, options, jqXHR);

    function done(status, nativeStatusText, responses, headers) {
      console.log(s,s.getData())
    }

    // Send the request 
    transport.send(s, done);

    return jqXHR;
  }


  function show(data){
    $('body').append('<li>'+ data +'</li>');
  }

  /**
   *  Data callback receiving 
   * @return {[type]} [description]
   */
  function flightHandler(){

  }

  $("#test").click(function(){
    // perform 1 An asynchronous HTTP ( Ajax ). 
    var ajax = createAjax({
      url: 'http://192.168.1.113:8080/github/jQuery/jsonp.php',
      data: {
        'action': 'aaron'
      }, //  An array of prepassed parameters 
      dataType: 'jsonp', //  The data type 
      jsonp: 'callback', //  Specifies the name of the callback function that is received on the server side 1 Send and pass back 
      jsonpCallback:flightHandler,
      success: function() {
        show(' Local events success')
      }
    })
  })