jquery for uploading images

I've packed all the files I've used and downloaded them myself:

Https://files.cnblogs.com/files/lguow/lib.rar

The core code is as follows:

<inputtype= "hidden"name= "Avatar"ID= "Avatar"><imgsrc=""alt=""ID= "Avatarshow"width= "200px"Height= "200px"><span>Upload Avatar</span><inputtype= "File"name= "File"ID= "File"onchange= "uploadimg ();"  ><Script>functionuploadimg () {Debugger; if($("#file"). Val ()!= ""{$.ajaxfileupload ({type:"POST", URL:"/selfsuperxxxxx/uploadfile",//Background InterfaceDataType:"JSON", Fileelementid:"file",  //the ID of the fileSuccess:function(d) {if(D.code== 0) {js.showmessage ("Upload Successful"); //Picture Display                    $("#avatar"). attr ("value", D.data.url); $("#avatarShow"). attr ("src", D.data.url); }}, Error:function() {Js.showmessage ("Upload failed");    },        }); } Else{js.showmessage ("Please select a file first"); }}</script.

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jquery for uploading images