js获取文件上传进度
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2022-03-04 12:16:15
js获取文件上传进度: js监听: ajax文件上传函数: 完整代码: ......
js获取文件上传进度:
<input name="file" id="FileUpload" type="file" /> <input type="button" onclick="Submit()" value="提交" />
js监听:
var xhrOnProgress=function(fun) { xhrOnProgress.onprogress = fun; //绑定监听 //使用闭包实现监听绑 return function() { //通过$.ajaxSettings.xhr();获得XMLHttpRequest对象 var xhr = $.ajaxSettings.xhr(); //判断监听函数是否为函数 if (typeof xhrOnProgress.onprogress !== 'function') return xhr; //如果有监听函数并且xhr对象支持绑定时就把监听函数绑定上去 if (xhrOnProgress.onprogress && xhr.upload) { xhr.upload.onprogress = xhrOnProgress.onprogress; } return xhr; } }
ajax文件上传函数:
function Submit(){ var fileObj = document.getElementById("FileUpload").files[0]; // js 获取文件对象 var formFile = new FormData(); formFile.append("file", fileObj); //加入文件对象 var data = formFile; $.ajax({ url: url, data: data, type: "Post", dataType: "json", cache: false,//上传文件无需缓存 processData: false,//用于对data参数进行序列化处理 这里必须false contentType: false, //必须 xhr:xhrOnProgress(function(e){ var percent=e.loaded/e.total;//文件上传百分比 console.log(percent); }), success: function (result) { console.log(result); }, }) }
完整代码:
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Document</title> </head> <body> <input name="file" id="FileUpload" type="file" /> <input type="button" onclick="Submit()" value="提交" /> </body> <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script> <script type="text/javascript"> var xhrOnProgress=function(fun) { xhrOnProgress.onprogress = fun; //绑定监听 //使用闭包实现监听绑 return function() { //通过$.ajaxSettings.xhr();获得XMLHttpRequest对象 var xhr = $.ajaxSettings.xhr(); //判断监听函数是否为函数 if (typeof xhrOnProgress.onprogress !== 'function') return xhr; //如果有监听函数并且xhr对象支持绑定时就把监听函数绑定上去 if (xhrOnProgress.onprogress && xhr.upload) { xhr.upload.onprogress = xhrOnProgress.onprogress; } return xhr; } } function Submit(){ var fileObj = document.getElementById("FileUpload").files[0]; // js 获取文件对象 var formFile = new FormData(); formFile.append("file", fileObj); //加入文件对象 var data = formFile; $.ajax({ url: "http://up.qiniu.com/", data: data, type: "Post", dataType: "json", cache: false,//上传文件无需缓存 processData: false,//用于对data参数进行序列化处理 这里必须false contentType: false, //必须 xhr:xhrOnProgress(function(e){ var percent=e.loaded/e.total; console.log(percent); }), success: function (result) { console.log(result); }, }) } </script> </html>
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