免责声明：我是什么，但一个JavaScript专家，所以我甚至不知道如果我正确地处理这个...

Disclaimer: I am anything but a Javascript expert, so I'm not even sure if I'm approaching this correctly...

我希望能够触发在Javascript中的事件，但可以当另一个事件时取消该事件。那么，是什么，我希望实现的是：

I want to be able to trigger an event in Javascript, but be able to cancel that event if another event occurs. So, what I'm looking to accomplish is:

在用户开始输入文本框。 当文本​​框内容发生变化，触发一个事件，使一个AJAX调用 但是，如果用户不断输入，取消该事件，因为我不想做查询，直到后，他们完成打字 User begins typing in a text box. When textbox contents change, trigger an event that makes an AJAX call BUT, if the user keeps on typing, cancel that event, because I don't want to do the query until after they are finished typing

即。如果用户输入foobar的中，我不想做的AJAX搜索，直到他们完成打字。没有任何理由让我做的事：

i.e. If the user is typing "foobar" in, I don't want to do the AJAX search until they're done typing. There is no reason for me to do:

AJAX（F） 接着 AJAX（FO） 接着 AJAX（富） 接着 AJAX（foob） ......

AJAX("f") and then AJAX("fo") and then AJAX("foo") and then AJAX("foob") ...

当我刚做了一个呼叫，当他们完成打字 AJAX（FOOBAR）

when I could have just done a single call when they were done typing AJAX("foobar")

...我会做任何意义吗？还是有更好的方法来处理这​​个？

... am I making any sense? Or is there a better way to approach this?

呵呵，然后起脚！我想避免的JQuery /样机，并为此与只是直接的JavaScript ... yeck

Oh, and then the kicker: I'd like to avoid JQuery/Prototype, and do this with just straight javascript... yeck!

推荐答案

您想要做的关键preSS是什么

What you want to do on keypress is

if(myTimeout)
   window.clearTimeout(myTimeout);

var myTimeout = window.setTimeout(function() {
   alert('one second has passed without any keypress');
}, 1000);