问题描述
简短版本：
我想得到与：
长版：
我想创建一个jQuery扩展，为$ .ajax对象添加一个进程方法，该方法适用于IE8& IE9的XDomainRequest对象。
I want to create a jQuery extension that adds a progress method to the $.ajax object and which works with IE8 & IE9's XDomainRequest object.
目前，使用上述插件，我只能为XMLHttpRequest对象定义进度事件回调处理程序。
Currently, using the above plugins, I can only define progress event callback handlers for XMLHttpRequest objects.
但是，XDomainRequest还提供onprogress事件。我基本上需要XDomainRequest的包装器。例如。 progressEvent.length对应于xdr.responseText.length。
However, XDomainRequest also provides an onprogress event. I basically need a wrapper for XDomainRequest. Eg. progressEvent.length would correspond to xdr.responseText.length.
我很感激有关从哪里开始的任何建议。
I'd appreciate any suggestions on where to begin.
推荐答案
好吧，我解决了这个问题。我最终要求通过ajax传输器实现XDomainRequest。
Well, I worked this out. I ended up forking ajaxHooks which implements XDomainRequest via an ajax transporter.
我添加了对名为progress的onprogress事件回调的支持，该回调可以用原始的ajax对象定义。
I added support for an onprogress event callback named "progress" which can be defined with the original ajax object.
按照W3C Standard，progressEvent.lengthComputable = false因为我们无法获得内容长度，所以progressEvent.total = 0;
As per the W3C Standard, progressEvent.lengthComputable = false because we can't get the content length, and so progressEvent.total = 0;
参见下面的示例：
$(document).ready(function(){
var download_url = YOUR_URL;
$.ajax({
url: download_url,
cache: false,
progress: function(jqXHR, progressEvent) {
console.log(progressEvent.loaded);
}
})
});
查看我的。
这篇关于jQuery $ .ajax扩展XDomainRequest onprogress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！