完成多个获取请求后调用jquery函数 [英] Calling a jquery function after multiple get request is completed

问题描述

好的，因此在我的网站上，我的加载主页通过使用.get方法创建了4个轮播.我想知道在每个轮播成功加载后如何调用js函数.有时有3到4个，有时没有任何旋转木马.无论如何，我是否正在使用get请求跟踪他们?

alright so on my site my home page on load create 4 carousels by using the .get method. I am wondering how one might call a js function after every carousel has been successfully loaded. Sometimes there are 3 to 4 sometimes there aren't any carousels. Is their anyway of tracking if i am requesting anything using get?

感谢一堆

推荐答案

Jquery最近引入了推迟对象，并让每个ajax调用都返回一个 jqxhr 对象承诺.所有这些意味着您可以使用以下语法摆脱疯狂情况的回调金字塔:

Jquery recently introduced the Deferred object and made every ajax call return an jqxhr object that works as a promise. All this means you can get out of the callback pyramid of madness situations with a syntax like this:

$.when(
    $.get('http://example.com'),
    $.get('http://example.com'),
    $.get('http://example.com')
).done(function(resp1, resp2, resp3){
    console.log(resp1, resp2, resp3);
    alert('all done \o/');
});

注意:仅当所有先前的诺言都成功返回时，才会调用done函数.对于不运行回调的情况，请使用始终.为了仅捕获错误，有失败.

Note: the done function(s) will be called only when all previous promise returns successfully. For a callback that runs no mater what use always. For catching only errors there's fail.

这篇关于完成多个获取请求后调用jquery函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！