取消表单提交

发布于 2024-09-07 11:01:19 字数 628 浏览 6 评论 0原文

如何使用 GWT 取消表单提交？

我需要在实际提交之前验证表单并处理一些数据。

到目前为止，我做了以下操作，问题是即使取消 SubmitEvent，表单也会提交。

form.addSubmitHandler( new SubmitHandler() {
        @Override
        public void onSubmit(SubmitEvent event) {
            if(validate()) {
                // i do some processing here
                form.submit();
            }

            else event.cancel(); // submits anyway
        }
    });

这是 GWT 问题吗？我该怎么办？

编辑：我刚刚发现，如果它是一个在单击时使用 form.submit() 的按钮，则提交事件将被取消。但是，如果单击 SubmitButton，则事件不会取消。

所以我猜这是浏览器的行为。不过，我需要找到方法...

编辑：刚刚发现它只发生在开发模式下，我觉得以前没有尝试过外部开发模式很愚蠢。

原文

How can I cancel a form submission using GWT?

I need to validate the form and process some of the data before actually submitting it.

So far I did the following, the problem is that the form is submitted even if the SubmitEvent is cancelled.

form.addSubmitHandler( new SubmitHandler() {
        @Override
        public void onSubmit(SubmitEvent event) {
            if(validate()) {
                // i do some processing here
                form.submit();
            }

            else event.cancel(); // submits anyway
        }
    });

Is this a GWT issue? How should I do?

edit: I just found out that if it was a Button that uses form.submit() on click, the submit event is cancelled. However if a SubmitButton is clicked, the event is not cancelled.

So I guess this is a browser behavior. Still, I need to find way...

edit: just found out that it does only happen in development mode, I feel silly not to have tried outside development mode before.

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