JS上传

//异步上传文件,成功时，执行SuccessDo并返回1;

//当失败时，返回JSON数据

// url:文件要上传的url

// fileId:要上传的文件名

// 当上传文件成功时，执行ScuccessDo Function

///

Ajax.FileUpload = function (url, fileId, SuccessDo) {

    var imageLoad;

    var imageLoadParent;

    var myform = document.createElement("form");

    myform.style.display = "none";

    myform.action = url;

    myform.enctype = "multipart/form-data";

    myform.method = "post";



    var is_chrome = /chrome/.test(navigator.userAgent.toLowerCase());

    if (is_chrome && document.getElementById(fileId).value == '')

        return; //Chrome bug onchange cancel

    if (document.all || is_chrome) {// IE 

        imageLoad = document.getElementById(fileId);

        imageLoadParent = document.getElementById(fileId).parentNode;

        myform.appendChild(imageLoad);

        document.body.appendChild(myform);

    }

    else { //FF

        imageLoad = document.getElementById(fileId).cloneNode(true);

        myform.appendChild(imageLoad);

        document.body.appendChild(myform);

    }

    $(myform).ajaxSubmit({

        success: function (responseText) {

            //这里请对应修改上传文件返回值，不要轻易把我删掉

            var res = responseText.split('|');

            alert(res[1]);

            if (res[0] == 1) {

                $(".k-close").click();

                $(".k-window,.k-overlay").remove();

                SuccessDo();

            }

        }

    });

}