我有一个用于将文件上传到我们的google驱动器的表单，我需要为某些字段创建验证。经过大量的Google搜索后，我发现您需要使用var m = new MenuFlyout
{
Placement = FlyoutPlacementMode.Full,
MenuFlyoutPresenterStyle = (Style)this.Resources["CenteredMenuFlyoutPresenterStyle"]
};
var t = new MenuFlyoutItem() { Text = "SomeTxt" };
m.Items.Add(t);
m.ShowAt((FrameworkElement)sender);
代替onsubmit来验证是否有效。
然而，当我将onclick转换为onsubmit，当验证开始工作时，文件上传功能中断，当有人点击提交（“上传文件”）按钮时没有任何反应。
原始代码如下：
onclick我将<form id="myForm" >
<center>Please deposit your file using the submission form below.</center>
<br>
<br>
<font size="3" color="red">*</font>Your Name: <input type="text" name="myName" placeholder="Your name.." required />
<font size="3" color="red">*</font>Your Email: <small><b>(to contact in case of questions, and send your file deposit receipt)</b></small> <input type="email" name="userMail" placeholder="Your email.." required />
<br>
<font size="3" color="red">*</font>File Recipient Name: <input type="text" name="recName" placeholder="Your recipient's name.." required />
<font size="3" color="red">*</font>File Recipient Email: <small><b>(whom to notify of your deposit)</b></small> <input type="email" name="recEmail" placeholder="Your recipient's email.." required />
<br>
School: <small><b>(if your file pertains to a specific school)</b></small> <input type="text" name="aSchool" placeholder="Pertaining school.." />
School Year: <small><b>(if your file pertains to a specific school year)</b></small> <input type="text" name="aSchoolYear" placeholder="Pertaining school year.." />
<br>
Note(s): <small><b>(any special note about the file)</b></small> <br> <textarea name="sNote" rows="3" cols="40" > </textarea>
<br>
<br>
<input type="file" name="myFile" required />
<br>
<input type="submit" value="Upload File"
onclick="this.value='Uploading..';
google.script.run.withSuccessHandler(fileUploaded)
.uploadFiles(this.parentNode);
return false;" />
</form>
转换为onclick，如此：
onsubmit关于我做错了什么或是否有不同的方法进行验证并保留<input type="submit" value="Upload File"
onsubmit="this.value='Uploading..';
google.script.run.withSuccessHandler(fileUploaded)
.uploadFiles(this);
return false;" />
的任何想法？
答案 0 :(得分：0)
当您更改为onsubmit时，this将成为表单本身，而不是提交按钮。
更好的方法（在我看来）是用JQuery语法实现事件，比如
$(document).on('submit', "#myForm", function(e) {
var formObj = $(e.currentTarget);
formObj.find("input[type='submit']").val("Uploading..");
....
});