停止发送电子邮件

本文介绍了停止发送电子邮件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在为Thunderbird编写附件，并且希望能够在某些情况下取消发送电子邮件.我有以下代码，可以让我在发送电子邮件之前执行代码，但是我不知道如何阻止它.

I am working on writing an add-on for Thunderbird and would like to be able to cancel the sending of an email under certain conditions. I have the following code which allows me to execute code before the email is sent, but I don't know how to stop it.

document.getElementById("msgcomposeWindow").addEventListener( "compose-send-message", function(){ var msgcomposeWindow = document.getElementById( "msgcomposeWindow" ); var msg_type = msgcomposeWindow.getAttribute( "msgtype" ); // do not continue unless this is an actual send event if( !(msg_type == nsIMsgCompDeliverMode.Now || msg_type == nsIMsgCompDeliverMode.Later) ) return; alert('Sending Message...');//works fine if(true){ //eventually this would have more logic... //stop email }else{ //let email go } }, true );

我该怎么做才能停止电子邮件?

What do I need to do to stop the email?

推荐答案

为了防止发送电子邮件，您需要防止事件冒泡:

In order to prevent the email from being sent you'd need to prevent the event from bubbling up:

function send_event_handler( evt ) { if(shouldStopEmail) { evt.preventDefault(); return false; } } window.addEventListener( "compose-send-message", send_event_handler, true );