本地图片的预览和上传

// 图片对象的URL取得
function getObjectURL(file) {
    var url = null;
    if (window.createObjectURL != undefined) {
        url = window.createObjectURL(file)
    } else if (window.URL != undefined) {
        url = window.URL.createObjectURL(file)
    } else if (window.webkitURL != undefined) {
        url = window.webkitURL.createObjectURL(file)
    }
    return url
};

  //(?)按钮
    //(?)按钮
    $("input[type=‘button‘].arrowButton").click(function () {
        var referClass_from = $(this).attr(‘referClass‘);
        var prefix = referClass_from.substr(0, referClass_from.length - 1);
        var no_from = referClass_from.substr(referClass_from.length - 1);
        var no_to;
        if ($(this).hasClass("left")) {
            no_to = parseInt(no_from) - 1;
        } else {
            no_to = parseInt(no_from) + 1;
        }
        var referClass_to = prefix + no_to;
        var $file_from = $("input[type=‘file‘]" + "." + referClass_from);
        var $file_to = $("input[type=‘file‘]" + "." + referClass_to);

        var file_id_from = $file_from.attr("id");
        var file_name_from = $file_from.attr("name");
        var file_class_from = $file_from.attr("class");
        var file_referClass_from = $file_from.attr("referClass");
        var title_from = $("input[type=‘text‘]" + "." + referClass_from + ".title").val();
        var date_from = $("input[type=‘text‘]" + "." + referClass_from + ".date").val();
        var imgsrc_from = $("img" + "." + referClass_from + ".img").attr("src");
        var file_existed_from = $("#" + referClass_from + "_Existed").val();
        var file_path_from = $("#" + referClass_from).val();

        var file_id_to = $file_to.attr("id");
        var file_name_to = $file_to.attr("name");
        var file_class_to = $file_to.attr("class");
        var file_referClass_to = $file_to.attr("referClass");
        var title_to = $("input[type=‘text‘]" + "." + referClass_to + ".title").val();
        var date_to = $("input[type=‘text‘]" + "." + referClass_to + ".date").val();
        var imgsrc_to = $("img" + "." + referClass_to + ".img").attr("src");
        var file_existed_to = $("#" + referClass_to + "_Existed").val();
        var file_path_to = $("#" + referClass_to).val();

        // To=>From

        $file_from.attr("id", file_id_to);
        $file_from.attr("name", file_name_to);
        $file_from.attr("referClass", file_referClass_to);
        $file_from.attr("class", file_class_to);

        $("input[type=‘text‘]" + "." + referClass_from + ".title").val(title_to);
        $("span" + "." + referClass_from + ".title").text(title_to);//印刷タブ

        $("input[type=‘text‘]" + "." + referClass_from + ".date").val(date_to);
        $("span" + "." + referClass_from + ".date").text(date_to);//印刷タブ

        $("img" + "." + referClass_from + ".img").attr("src", imgsrc_to);//印刷タブと一緒

        $("#" + referClass_from + "_Existed").val(file_existed_to);

        $("#" + referClass_from).val(file_path_to);

        // From=>To

        $file_to.attr("id", file_id_from);
        $file_to.attr("name", file_name_from);
        $file_to.attr("class", file_class_from);
        $file_to.attr("referClass", file_referClass_from);

        $("input[type=‘text‘]" + "." + referClass_to + ".title").val(title_from);
        $("span" + "." + referClass_to + ".title").text(title_from);//印刷タブ

        $("input[type=‘text‘]" + "." + referClass_to + ".date").val(date_from);
        $("span" + "." + referClass_to + ".date").text(date_from);//印刷タブ

        $("img" + "." + referClass_to + ".img").attr("src", imgsrc_from);//印刷タブと一緒

        $("#" + referClass_to + "_Existed").val(file_existed_from);

        $("#" + referClass_to).val(file_path_from);
    });


// 图片选择变化
function changePhoto(sender) {
    var picFile = $(sender).val();
    if (picFile) {
        // 后缀名检查
        if (!checkFileType(picFile, UPLOAD_IMAGE_FILE_EXTENSION)) {
            alert(G_W0008_A);
            $(sender).val(‘‘);
            return;
        }
        // 文件大小检查
        if (!checkFileSize($(sender)[0], UPLOAD_IMAGE_FILE_SIZE_MAX)) {
            $(sender).val(‘‘);
            alert(G_W0009_A);
            return;
        }

        var picFileNmae = picFile.replace(/^.*[\\\/]/, ‘‘);
        var picFileNameWithOutExt = picFileNmae.replace(/\..*/, ‘‘);
        var maxlength = $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".title").attr("maxlength");
        if (maxlength) {
            picFileNameWithOutExt = picFileNameWithOutExt.substr(0, maxlength);
        }
        // 图片title
        $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".title").val(picFileNameWithOutExt);
        // 图片拍摄日期(Exif)
        $(sender).fileExif(function (exifObj) {
            if (exifObj.DateTime && exifObj.DateTime.length > 10) {
                var strDate = exifObj.DateTime.substr(0, 10).replace(new RegExp(":", "g"), ‘/‘);
                $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".date").val(strDate);
            } else {
                $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".date").val(‘‘);
            }
        });

        // 图片预览
        if ($(sender)[0].files) {
            $("img" + "." + $(sender).attr(‘referClass‘) + ".img").attr("src", getObjectURL($(sender)[0].files[0]));
        }
    } else {
        //cancel
        return;
    }
};

        // (Exif情報取得)
        $(sender).fileExif(function (exifObj) {
            if (exifObj.DateTime && exifObj.DateTime.length > 10) {
                var strDate = exifObj.DateTime.substr(0, 10).replace(new RegExp(":", "g"), ‘/‘);
                $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".date").val(strDate);
            } else {
                $("input[type=‘text‘]" + "." + $(sender).attr(‘referClass‘) + ".date").val(‘‘);
            }
        });

 //sender 就是input[type=‘file‘]