我如何知道何时使用getScript完成Ajax调用？

Question

我正在使用jQuery getScript将X量的js文件加载到我的页面中.每个JS页面都有一个AJAX调用,用于从数据库中获取数据.

我正在使用.done方法getScript来查看所有文件何时加载但我需要等到所有的AJAX调用都已完成.

getScript在做某事之前,我怎样才能等待AJAX​​调用完成包含的文件？

$.getMultiScripts(moduleIncludes, 'includes/js/modules/').done(function() {
    // All of the JS files have been included but we need to wait until those files have finished their AJAX call.     
});

// Get array of JS scripts to load
$.getMultiScripts = function(arr, path) {

  var _arr = $.map(arr, function(scr) {
      return $.getScript((path || "") + scr);
  });

  _arr.push($.Deferred(function(deferred) {
      $(deferred.resolve);
  }));

  return $.when.apply($, _arr);
}

Answer 1

您可以使用 .ajaxStop()

每当Ajax请求完成时,jQuery都会检查是否还有其他未完成的Ajax请求.如果没有,jQuery会触发该ajaxStop事件.

$(document).on("ajaxStop", function() {
  // do stuff when all `$.ajax()` call have complete
  $(document).off("ajaxStop")
});

$.getMultiScripts(moduleIncludes, 'includes/js/modules/').done(function() {
    // All of the JS files have been included but we need to wait until those files have finished their AJAX call.     
});

另一种方法是使用$.when.apply()两次.也就是说,将ajax调用推入第二个数组

"module1.js"

data.push($.get("/path/to/module1-resource"))

var modules = ["module1.js", "module2.js", "module3.js"];
// declare global `data` array
data = [];

$.getMultiScripts = function(arr, path) {

  var _arr = $.map(arr, function(scr) {
      return $.getScript(scr)
  });

  return $.when.apply($, _arr.concat($.when()))
}

$.getMultiScripts(arr)
.then(function() {
  console.log("getScript calls", arguments)
  $.when.apply($, data).then(function() {
    console.log("ajax calls", arguments)
  })
});

plnkr http://plnkr.co/edit/si2EsUZOciOwU4nAPlS9?p=preview