var options = {
beforeSubmit: showRequest, //提交前处理
success: showResponse, //处理完成
resetForm: true,
dataType: 'json',
type: 'post'
};



//这里用form-uploadfile是form的id

$('#form-uploadfile').submit(function () { //注意这里的index_form
$(this).ajaxSubmit(options);
return false;//防止dialog 自动关闭
});



//这里可以对请求前的参数进行处理

function showRequest(formData, jqForm, options) {
var queryString = $.param(formData);

return true;
}



//这里对请求完成后进行处理，可以弹出提示信息之类的，responseText是返回的数据
function showResponse(responseText, statusText, xhr, $form) {

if (responseText.success) {

return true;
}
else {
alert(responseText.msg);
return false;
}

}

 var uploadInfo = {};
        //遍历绑定 文件改变事件
        var allImg = $("input");
        $.each(allImg, function (index, item) {
            item.addEventListener("change", getPic, false);
        })

        function getPic(evt) {
            /// <summary>监听图片上传事件</summary>
            var imgID = this.title;
            var getImg = document.getElementById("img_" + imgID);
            var uploadingImg = document.getElementById("uploadingImg");
            var file = evt.dataTransfer !== undefined ? evt.dataTransfer.files[0] : evt.target.files[0];
            uploadInfo.type = file.type;
            uploadInfo.name = file.name;
            //图片格式验证
            if (!file.type.match(/image.*/)) { return; }

            var reader = new FileReader();
            reader.onload = (function () {
                return function (e) {
                    uploadInfo.imageBase64 = e.target.result;
                    uploadingImg.src = event.target.result;
                    getImg.style.backgroundImage = "url('" + event.target.result + "')";
                    var uploadImg = picCompress(uploadingImg, 50);

                    if (!uploadImg) {
                        return;
                    }
                    var resImg = uploadImg.toString().split("base64,")[1];
                    hm.getJSON("@Url.Action("UploadFileImg", "File")", { strBase64: resImg }, function (data) {
                        if (data.HasError) {
                            hm.showMsg(data.Message, "提示", "msg", {
                                "确定": function () {
                                    return;
                                }
                            });
                            return;
                        } else {
                            var comData = data.ComData;
                            if (comData && comData != "undefined") {
                                /*上传成功之后存进session隐藏上传按钮并提示上传成功*/
                                sessionStorage["ptrade-realaffirm-pic" + imgID] = comData;
                                document.getElementById("pic" + imgID).style.display = "none";
                                document.getElementById("uploadArea" + imgID).className = "hy-icon hy-icon-true";
                                document.getElementById("txtpic" + imgID).innerText = "上传成功！";
                                document.getElementById("img_" + imgID).addEventListener("click", showLargerImg, false);
                            }
                        }
                    });
                }
            })(file);
            reader.readAsDataURL(file);
        }
    })

    function picCompress(img, quality, output_format) {
        /// <summary>压缩图片并获取图片Base64编码</summary>
        /* MIME type，表示数据呈现的格式，即指定嵌入数据的MIME。对于PNG的图片，其格式是：image/png，如果没有指定，默认是：text/plain；*/
        var mime_type = "image/jpg";
        if (output_format != undefined && output_format == "png") {
            mime_type = "image/png";
        }
        var cvs = document.createElement('canvas');
        cvs.width = img.naturalWidth;
        cvs.height = img.naturalHeight;
        //图片压缩
        var ctx = cvs.getContext('2d').drawImage(img, 0, 0);
        //获取图片Base64编码
        var newImgData = cvs.toDataURL(mime_type, quality / 100);
        var retImg = newImgData;
        return retImg;
    }

    function checkPic() {
        /// <summary>检查图片信息确定上传成功后跳转</summary>
        var img_1 = sessionStorage["ptrade-realaffirm-pic1"],
            img_2 = sessionStorage["ptrade-realaffirm-pic2"],
            img_3 = sessionStorage["ptrade-realaffirm-pic3"];
        if (img_1 && img_2 && img_3 && img_1 != "undefined" && img_2 != "undefined" && img_3 != "undefined") {
            window.location = "@Url.Action("RealNameAuthentication", "Reality")";
        }
    }
    function showLargerImg() {
        var myMask = document.getElementById("myMask"),
            myDialog = document.getElementById("myDialog"),
            largerImg = document.getElementById("largerImg");
        myMask.style.display = "block";
        myDialog.style.display = "block";
        var imgUrl = this.style.backgroundImage;
        imgUrl = imgUrl.replace("url(\"", "").replace("\")", "");
        largerImg.src = imgUrl;
    }