html
<input type="button" onclick="Submit()" value="提交" />
JS
var xhrOnProgress=function(fun) {
xhrOnProgress.onprogress = fun; //綁定監聽
//使用閉包實現監聽綁
return function() {
//通過$.ajaxSettings.xhr();獲得XMLHttpRequest對象
var xhr = $.ajaxSettings.xhr();
//判斷監聽函數是否爲函數
if (typeof xhrOnProgress.onprogress !== 'function')
return xhr;
//如果有監聽函數並且xhr對象支持綁定時就把監聽函數綁定上去
if (xhrOnProgress.onprogress && xhr.upload) {
xhr.upload.onprogress = xhrOnProgress.onprogress;
}
return xhr;
}
}
ajax文件上傳函數：
function Submit(){
var fileObj = document.getElementById("FileUpload").files[0]; // js 獲取文件對象
var formFile = new FormData();
formFile.append("file", fileObj); //加入文件對象
var data = formFile;
$.ajax({
url: url,
data: data,
type: "Post",
dataType: "json",
cache: false,//上傳文件無需緩存
processData: false,//用於對data參數進行序列化處理 這裏必須false
contentType: false, //必須
xhr:xhrOnProgress(function(e){
var percent=e.loaded/e.total;//文件上傳百分比
console.log(percent);
}),
success: function (result) {
console.log(result);
},
})
}
完整代碼：
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>Document</title>
</head>
<body>
<input name="file" id="FileUpload" type="file" />
<input type="button" onclick="Submit()" value="提交" />
</body>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
var xhrOnProgress=function(fun) {
xhrOnProgress.onprogress = fun; //綁定監聽
//使用閉包實現監聽綁
return function() {
//通過$.ajaxSettings.xhr();獲得XMLHttpRequest對象
var xhr = $.ajaxSettings.xhr();
//判斷監聽函數是否爲函數
if (typeof xhrOnProgress.onprogress !== 'function')
return xhr;
//如果有監聽函數並且xhr對象支持綁定時就把監聽函數綁定上去
if (xhrOnProgress.onprogress && xhr.upload) {
xhr.upload.onprogress = xhrOnProgress.onprogress;
}
return xhr;
}
}
function Submit(){
var fileObj = document.getElementById("FileUpload").files[0]; // js 獲取文件對象
var formFile = new FormData();
formFile.append("file", fileObj); //加入文件對象
var data = formFile;
$.ajax({
url: "http://up.qiniu.com/",
data: data,
type: "Post",
dataType: "json",
cache: false,//上傳文件無需緩存
processData: false,//用於對data參數進行序列化處理 這裏必須false
contentType: false, //必須
xhr:xhrOnProgress(function(e){
var percent=e.loaded/e.total;
console.log(percent);
}),
success: function (result) {
console.log(result);
},
})
}
</script>
</html>