问题描述
我有一个 jQuery AJAX 调用，它将一个 URL 的页面附加到一个选择器中。我想监控被追加页面的进度：
$.ajax({
url: URL,type: 'POST',data: {
page: 'page'
},dataType: 'HTML',async: true,cache: false,xhr:
function() {
var XHR = new window.XMLHttpRequest();
XHR.upload.addEventListener('loadstart',HandleXHR); // Upload has begun
XHR.upload.addEventListener('progress',HandleXHR); // Periodically indicates the amount of progress made so far
XHR.upload.addEventListener('error',HandleXHR); // Upload Failed due to an error
XHR.upload.addEventListener('abort',HandleXHR); // Upload operation was aborted
XHR.upload.addEventListener('load',HandleXHR); // Upload completed successfully
XHR.upload.addEventListener('loadend',HandleXHR); // Upload finished
function HandleXHR(event) {
if(event.lengthComputable) {
PercentProgress = Math.floor((event.loaded / event.total) * 100);
console.log(PercentProgress); // Returns 'Content-Length' header of data object (above)
}
}
return XHR;
},success:
function(data) {
console.log(data.length); // Returns more accurate number (probably what I want)
$('.selector').html(data);
}
});
如何计算 XHR 对象中正确的标头 Content-Length 信息以显示与标头 Content-Length相关的 AJAX 调用成功对象的进度状态> [我已经得到] 的数据对象？
解决方法
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