<input type="hidden" name="avatar" id="avatar">

<img src="" alt="" id="avatarShow" width="200px" height="200px">

<span>上传头像</span>

<input type="file" name="file" id="file" onchange="uploadImg();"  >

<script>

function uploadImg() {

    debugger;

    if($("#file").val() != "") {

        $.ajaxFileUpload({

            type: "POST",

            url:"/selfsuperXXXXX/uploadFile",//后台接口

            dataType: "json",

            fileElementId:"file",  // 文件的id

            success: function(d){

                if(d.code == 0) {

                    js.showMessage("上传成功");

                    //图片显示

                    $("#avatar").attr("value",d.data.url);

                    $("#avatarShow").attr("src",d.data.url);

                }

            },

            error: function () {

                js.showMessage("上传失败");

            },

        });

    } else {

        js.showMessage("请先选择文件");

    }

}

</script.