In JavaScript is it possible on IE to register one event listener to capture all the change, focus, and blur events on the page?

Question

• In non-IE browsers:
  • The change event bubbles, so you can catch it when it gets to document in the bubbling phase.
  • The focus and blur events don't bubble, but you can catch them on the capture phase with one event listener on document .
• On IE:
  • None of those 3 events bubble (including the change event, which is not spec compliant).
  • There is no capture phase on IE.

So, as far as I know, the only way on IE is to register an event listener for change , focus , and blur on every form control. This operation can be expensive when you have a lot of controls. But is there a better way?

Answer 1

jQuery 1.4定义了“ focusin”和“ focusout”来捕获所有浏览器的焦点和模糊事件。