functionkeyboardEvents(e){e.preventDefault();activeKey(e);if(e.key===" "){keyEvent.style.font...
Backspace:event.key为"Backspace",keyCode为8 Tab:event.key为"Tab",keyCode为9 箭头键 左:event.key为"ArrowLeft",keyCode为37 上:event.key为"ArrowUp",keyCode为38 右:event.key为"ArrowRight",keyCode为39 下:event.key为"ArrowDown",keyCode为40 功能键 F1-F12:event.key为"F1"至"F12",keyCode为1...
3.1 KeyboardEvent.altKey,KeyboardEvent.ctrlKey,KeyboardEvent.metaKey,KeyboardEvent.shiftKey 以下属性都是只读属性,返回一个布尔值,表示是否按下对应的键: KeyboardEvent.altKey:是否按下Alt键 KeyboardEvent.ctrlKey:是否按下Ctrl键 KeyboardEvent.metaKey:是否按下meta键(Mac系统是一个四瓣的小花,Windows系统是windo...
There are many other special keys on a typical keyboard that do not normally send characters. These include the four arrow keys, navigation keys likeHomeandPage Up, special function keys likeInsertandDelete, and the function keysF1throughF12. Internet Explorer and Safari 3.1 seem to classify all...
还要理解一个概念是键盘中的键分为字符(可打印)键和功能键(不可打印),功能键包括Backspace, Enter, Escape, the arrow keys, Page Up, Page Down, and F1 through F12 等 下面说一下键盘事件的具体使用方法, 键盘事件的event对象中包含一个keyCode属性,IE中只有这一个属性,当为keydown和keyup 事件是,...
document.addEventListener('keydown', function(event) { if (event.keyCode === 38) { console.log('Up arrow key pressed'); } }); 这种方法不推荐用于新项目,因为它可能导致兼容性问题,相反,应该使用event.key或event.code来获取按键信息。
document.addEventListener('keydown', function(event) { // 获取按下的键的键码 var keyCode = event.keyCode || event.which; // 根据键码进行相应的处理 switch (keyCode) { case 37: // 左箭头键 console.log('Left arrow key pressed'); break; case 38: // 上箭头键 console.log('Up arrow ...
最有力的论据是 Internet Explorer 9 和 11 依赖于此,它们不支持代码https://caniuse.com/#search=event.code或完全支持密钥https://caniuse.com /#search=event.key所以我认为LanguageEvent应该在其初始值设定项中允许 keyCode。 letarrowRight =newKeyboardEvent('keydown', {keyCode: 39 });...
function checkPhoneKey(key) {return(key >='0'&& key <='9') ||['+','(',')','-','ArrowLeft','ArrowRight','Delete','Backspace'].includes(key); } 现在方向键和删除键都能正常使用了。 ……即使我们对按键进行了过滤,但仍然可以使用鼠标右键单击 + 粘贴来输入任何内容...
<!-- function showkey(){ key = event.keyCode;if (key == 37) alert("按了←键！");if (key == 38) alert("按了↑键！");if (key == 39) alert("按了→键！");if (key == 40) alert("按了↓键！");} document.onkeydown=showkey;--> 请按方向键←↑→↓ 如...