js: 监听键盘按键事件KeyboardEvent

文档

• https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent

事件类型

• keydown
• keypress
• keyup

代码示例

<div id="text"></div>

<script>
  function eventHandler(event) {
    console.log(event);

    let data = {
      code: event.code,
      key: event.key,
      keyCode: event.keyCode,
      altKey: event.altKey,
      shiftKey: event.shiftKey,
      ctrlKey: event.ctrlKey,
      metaKey: event.metaKey,
    };

    let list = [];
    for (let [key, value] of Object.entries(data)) {
      list.push(`<li>${key}: ${value}</li>`);
    }

    document.querySelector("#text").innerHTML = list.join("");
  }

  document.addEventListener("keydown", this.eventHandler.bind(this));
</script>

  
 

  
 
 

  
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在线体验：https://github.com/mouday/front-end-demo/EventListener-keydown.html

文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。

原文链接：pengshiyu.blog.csdn.net/article/details/126560599