获取 JQuery ajax 请求进度的最干净方法是什么?

本文介绍了获取 JQuery ajax 请求进度的最干净方法是什么?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在普通的 javascript 中非常简单:只需要​​将回调附加到 {XMLHTTPRequest}.onprogress

In plain javascript is very simple: need just to attach the callback to {XMLHTTPRequest}.onprogress

var xhr = new XMLHttpRequest(); xhr.onprogress = function(e){ if (e.lengthComputable) var percent = (e.loaded / e.total) * 100; }; xhr.open('GET', 'www...', true); xhr.onreadystatechange = function() { ... }; xhr.send(null);

但我正在做一个使用 JQuery 下载 html 数据的 ajax 站点($.get() 或 $.ajax())，我想知道哪个是获取请求进度的最佳方法，以便用一个小进度条显示它，但奇怪的是，我在 JQuery 文档中没有找到任何有用的东西......

but I'm doing an ajax site that download html data with JQuery ($.get() or $.ajax()) and I was wondering which is the best way to get the progress of a request in order to display it with a little progress bar but curiously, I'm not finding anything usefull in JQuery documentation...

推荐答案

$.ajax 类似这样的事情(仅 HTML5):

Something like this for $.ajax (HTML5 only though):

$.ajax({ xhr: function() { var xhr = new window.XMLHttpRequest(); xhr.upload.addEventListener("progress", function(evt) { if (evt.lengthComputable) { var percentComplete = evt.loaded / evt.total; //Do something with upload progress here } }, false); xhr.addEventListener("progress", function(evt) { if (evt.lengthComputable) { var percentComplete = evt.loaded / evt.total; //Do something with download progress } }, false); return xhr; }, type: 'POST', url: "/", data: {}, success: function(data){ //Do something on success } });