Javascript shift+tab 的键码是什么？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/3044083/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
what is the key code for shift+tab?
提问by rajesh
I am working on key mapping. The problem is that when I press the TAB button down it navigates to the next input field.
我正在研究键映射。问题是当我按下 TAB 按钮时，它会导航到下一个输入字段。
TAB has key of 9 and
DOWN has key of 40
TAB 键为 9，
DOWN 键为 40
But, what is the JavaScript key code to go to the previous input field (SHIFT + TAB)?
但是，转到上一个输入字段 (SHIFT + TAB) 的 JavaScript 键代码是什么？
What I want is to go to next link; what is keycode or code for the previous link?
我想要的是去下一个链接；上一个链接的键码或代码是什么？
Please help. Thanks.
请帮忙。谢谢。
回答by Nick Craver
There's no "keycode", it's a separate property on the event object, like this:
if(event.shiftKey && event.keyCode == 9) {
//shift was down when tab was pressed
}
回答by bit-less
e.keyCodehas been deprecatedfor sometime. Use "e.key" KeyboardEvent.keyinstead.
e.keyCode已被弃用一段时间。改用“e.key” KeyboardEvent.key。
Usage:
用法：
e.shiftKey && e.key === 'Tab'
Example:
例子：
function clicked(e) {
if (e.shiftKey && e.key === 'Tab') {
// Do whatever, like e.target.previousElementSibling.focus();
}
}
回答by knittl
you can use the event.shiftKeyproperty for that: http://www.java2s.com/Code/JavaScript/Event/Shiftkeypressed.htm
您可以使用该event.shiftKey属性：http: //www.java2s.com/Code/JavaScript/Event/Shiftkeypressed.htm
回答by touchchandra
in my GWT case
在我的 GWT 案例中
if(event.isShiftKeyDown() && event.getNativeKeyCode() == KeyCodes.KEY_TAB){
//Do Something
}
