我有两个函数。当按下回车键时，函数正常运行，但当按下escape键时，它就不正常了。退出键的正确数字是多少?
$(document).keypress(function(e) {
if (e.which == 13) $('.save').click(); // enter (works as expected)
if (e.which == 27) $('.cancel').click(); // esc (does not work)
});
当前回答
$(document).on('keydown', function(event) {
if (event.key == "Escape") {
alert('Esc key pressed.');
}
});
其他回答
试试jEscape插件(从谷歌驱动器下载)
$(document).escape(function() {
alert('ESC button pressed');
});
或获得跨浏览器的键码
var code = (e.keyCode ? e.keyCode : e.which);
if (code === 27) alert('ESC');
if (code === 13) alert('ENTER');
也许你可以用开关
var code = (e.keyCode ? e.keyCode : e.which);
switch (code) {
case 27:
alert('ESC');
break;
case 13:
alert('ENTER');
break;
}
27是escape键的代码。：）
要找到任何键的键码，使用这个简单的函数:
document.onkeydown = function(evt) {
console.log(evt.keyCode);
}
只是发布一个更新的答案比e.c ekeycode被认为是DEPRECATED在MDN上。
相反，你应该选择e.key，它支持所有东西的干净名称。下面是相关的抄面食
window.addEventListener("keydown", function (event) {
if (event.defaultPrevented) {
return; // Do nothing if the event was already processed
}
switch (event.key) {
case "ArrowDown":
// Do something for "down arrow" key press.
break;
case "ArrowUp":
// Do something for "up arrow" key press.
break;
case "ArrowLeft":
// Do something for "left arrow" key press.
break;
case "ArrowRight":
// Do something for "right arrow" key press.
break;
case "Enter":
// Do something for "enter" or "return" key press.
break;
case "Escape":
// Do something for "esc" key press.
break;
default:
return; // Quit when this doesn't handle the key event.
}
// Cancel the default action to avoid it being handled twice
event.preventDefault();
}, true);
尝试使用keyup事件:
$(document).on('keyup', function(e) {
if (e.key == "Enter") $('.save').click();
if (e.key == "Escape") $('.cancel').click();
});
