使用 jQuery 捕获“删除”按键
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Capturing "Delete" Keypress with jQuery
提问by Shane H
When using the example code from the jQuery documentation for the keypress event handler, I'm unable to capture the Deletekey. The snippet below is going to log 0when the Deletekey is pressed in FireFox:
将 jQuery 文档中的示例代码用于 keypress 事件处理程序时，我无法捕获Delete密钥。下面的代码片段将在 FireFox 中按下0该Delete键时记录：
$(document).keypress(function(e) {
console.log(e.which);
});
Seems there's gotta be a way to capture the Deletekey, but it's an ambiguous term so Google isn't proving to be much help with it.
似乎必须有一种方法来捕获Delete密钥，但这是一个模棱两可的术语，因此 Google 并没有证明对此有多大帮助。
回答by Philippe Leybaert
You shouldn't use the keypressevent, but the keyupor keydownevent because the keypressevent is intended for real (printable) characters. keydownis handled at a lower level so it will capture all nonprinting keys like deleteand enter.
您不应使用keypress事件，而应使用keyuporkeydown事件，因为该keypress事件适用于真实（可打印）字符。keydown在较低级别处理，因此它将捕获所有非打印键，如delete和enter。
回答by Tod Palin
$('html').keyup(function(e){
if(e.keyCode == 46) {
alert('Delete key released');
}
});
Source: javascript char codes key codesfrom www.cambiaresearch.com
来源：来自 www.cambiaresearch.com 的javascript 字符代码关键代码
回答by csonuryilmaz
Javascript Keycodes
Javascript 键码
- e.keyCode== 8 for backspace
- e.keyCode== 46 for forward backspaceor deletebutton in PC's
- e.keyCode== 8 为backspace
- e.keyCode== 46 forforward backspace或deletePC 中的按钮
Except this detail Colin & Tod's answer is working.
除了这个细节，科林和托德的回答是有效的。
回答by Gibolt
event.key === "Delete"
event.key === "删除"
More recent and much cleaner: use event.key. No more arbitrary number codes!
更新更干净：使用event.key. 没有更多的任意数字代码！
document.addEventListener('keydown', function(event) {
const key = event.key; // const {key} = event; ES6+
if (key === "Delete") {
// Do things
}
});
