如何呼叫警报所有Ajax请求完成后？ [英] How to call alert after all ajax requests are done?

问题描述

我做在codeA与jQuery几个请求和 GET 。它看起来像：

I'm making in code a few requests with JQuery and get. It looks like:

$.get('address1', function() { ... });
$.get('address2', function() { ... });
$.get('address3', function() { ... });

// This code should be runned when all 3 requests are finished
alert('Finished');

那么，有什么方法来检测是否还有处理请求并运行，只有当所有3请求完成后打上code。

So, are there any ways to detect whether there is still processing request and run marked code only when all 3 requests are finished.

感谢。

推荐答案

您可以使用的延期对象的 ^[文档] jQuery的1.5介绍：

You can make use of deferred objects ^[docs] introduced in jQuery 1.5:

$.when(
    $.get('address1', function() { ... }),
    $.get('address2', function() { ... }),
    $.get('address3', function() { ... })
).then(function() {
    alert('Finished');
});

参考： jQuery.when

jQuery的学习中心有一个很好的介绍推迟对象/ 的承诺

The jQuery learning center has a nice introduction to deferred objects / promises.

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