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
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);
其他回答
$(document).on('keydown', function(event) {
if (event.key == "Escape") {
alert('Esc key pressed.');
}
});
一个健壮的Javascript库，用于捕获键盘输入和输入的组合键。它没有依赖关系。
http://jaywcjlove.github.io/hotkeys/
hotkeys('enter,esc', function(event,handler){
switch(handler.key){
case "enter":$('.save').click();break;
case "esc":$('.cancel').click();break;
}
});
热键支持以下修饰符:⇧、shiftoption“altctrlcontrolcommand”和⌘。
以下特殊键可用于快捷键:backspacetab,clear,enter,return,esc,escape,space,up,down,left,right,home,end,pageup,pagedown,del,delete和f1到f19。
我一直用keyup和e.来捕捉escape键。
尝试使用keyup事件:
$(document).on('keyup', function(e) {
if (e.key == "Enter") $('.save').click();
if (e.key == "Escape") $('.cancel').click();
});
27是escape键的代码。：）
