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Image upload plugin usage, JS syntax "three"

Source: Internet
Author: User
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Note the point:

The name attribute must be used as the file field (<input type= "File" >), and if there is no Name attribute, the server is not getting the picture after uploading. such as: The correct wording is <input type= "file" id= "File1" name= "File1"/>

The datatype parameter must be capitalized. such as: dataType: ' HTML '.

Html

<body> <p><input type="file"Id="file1"Name="file"/></p> <input type="Button"Value="Upload"/> <p>"IMG1"alt="The upload was successful."Src=""/></p></body>

Js

<script src="Jquery-1.7.1.js"Type="Text/javascript"></script> <script src="Ajaxfileupload.js"Type="Text/javascript"></script> <script type="Text/javascript">$ (function () {$ (": Button"). Click (function () {ajaxfileupload ();                    })}) function Ajaxfileupload () {$.ajaxfileupload ({ URL:'/upload.aspx',//server-side request address for file uploadsSecureuri:false,//whether a security protocol is required, generally set to falseFileelementid:'file1',//ID of the file upload domainDataType:'JSON',//The return value type is generally set to JSONSuccess:function (data, status)//Server Success Response handler function                    {                        $("#img1"). attr ("src", Data.imgurl); if(typeof(data.error)! ='undefined') {                            if(Data.error! ="') {alert (data.error); } Else{alert (data.msg); }}, Error:function (data, status, E)//Server Response Failure handler function{alert (e); }                }            )            return false; }    </script>

Background

 protected voidPage_Load (Objectsender, EventArgs e) {httpfilecollection Files=Request.Files; stringmsg =string.            Empty; stringError =string.            Empty; stringImgurl; if(Files. Count >0) {files[0]. SaveAs (Server.MapPath ("/") + System.IO.Path.GetFileName (files[0].                FileName)); Msg="Success! File size is:"+ files[0].                ContentLength; Imgurl="/"+ files[0].                FileName; stringres ="{error: '"+ Error +"', msg: '"+ msg +"', Imgurl: '"+ Imgurl +"'}";                Response.Write (RES);            Response.End (); }        }

Image upload plugin usage, JS syntax "three"

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Related Keywords:
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