空格并输入“点击”在关注的输入上。如何禁用此行为？
在chrome和firefox（以及其他人）中，如果你有一个聚焦的输入，按空格和输入会为你点击它们。我正在制作一个HTML 5游戏，我想重写空间和输入对焦点的反应，默认行为正在妨碍我。有没有办法在大多数浏览器中关闭此默认行为？
In chrome and firefox (and maybe others), if you've got an input focused, pressing "space" and "enter" clicks them for you. I'm making an HTML 5 game and I want to rewrite how space and enter reacts on focus and the default behavior is getting in my way. Is there a way to turn this default behavior off in most browsers?
这是一个jsfiddle ，展示了这个问题。
Here's a jsfiddle demonstrating the problem.
<button>Button<button>
$("button").on("click", function(event) { alert("Clicked"); });
如果单击按钮，它会显示良好的警报。但如果您在单击后按空格或输入，它也会发出警报。我想防止这种行为，这样我就可以在没有干扰的情况下编写自己的行为。
If you click on the button, it displays the alert which is good. But if you press "space" or "enter" after you click it, it also alerts. I want to prevent this behavior so that I can write my own without them interfering.
您可以使用 event.detail 。这将返回单击按钮的次数。如果按Enter键，则返回0，因为您单击了0次，如果您通过鼠标单击它，它将返回您单击按钮的次数。
You can fix this by using event.detail. That will return the amount of times the button has been clicked. If you press enter, this returns 0, since you clicked it 0 times, and if you click it via your mouse, it returns the amount of times you clicked the button.
要访问 event.detail ，您需要访问原始事件对象。这可以通过jQuery事件对象中的 event.originalEvent 来完成。所以，如果你只是在你的脚本中添加一个if语句：
To access event.detail, you need to access the original event object. This can be done via event.originalEvent in the jQuery event object. So, if you just put an if statement in your script:
if (event.originalEvent.detail != 0) {
//your click event code
}
然后它只会运行你实际上是通过鼠标点击按钮。
then it'll only run if you actually click the button via your mouse.
这比检查按钮是否有：焦点更准确>，因为单击按钮时按钮会自动聚焦，所以这样做会在单击后禁用按钮。
This will be much more accurate than checking if the button has :focus, since the button automatically gets focused when you click it, so doing that would disable the button after a single click.