按键事件如何与不会引起任何关注的元素一起使用

Question

I need to attach a key press event on a

element. I know we can use $(":li").live() will do that but since li is not a focusable element how can it take the key press event. Or when does the key press event gets fired for this elements?

Please help?

Answer 1

An unfocusable element will not fire key events (although key events may bubble up from focusable elements contained within it).

If you want to make the element focusable and receive key events, you could set its tabindex , either as an attribute in HTML or via JavaScript. Setting a tabindex value of 0 puts the element in the default tab order, which is the order elements appear in the DOM.

<li tabindex="0">...</li>

To set all <li> elements as focusable in jQuery:

$("li").prop("tabIndex", 0);