Question

I have used keyDown event to manage the input tag value by judge e.keycode, but when I want use keyDown event do something on body element or img , I found it doesn t work,like :

$( body,img ).keyDown(function(e){
    console.log(e.keyCode);
});

关键缩略语

Answer 1

主要活动仅涉及可视<>的内容。这将包括投入领域、文本领域等,但你可能不会发现任何浏览器支持<代码>img要素。 http://api.jquery.com/keydown/“rel=“nofollow noreferer” Query docs :

The keydown event is sent to an element when the user first presses a key on the keyboard. It can be attached to any element, but the event is only sent to the element that has the focus. Focusable elements can vary between browsers, but form elements can always get focus so are reasonable candidates for this event type.

您也可对这个相关问题感兴趣:。哪些超文本元素能受到重视?

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