1. 面向开发者的 Web 技术
  2. Web API
  3. CommandEvent
  4. CommandEvent：command 属性

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CommandEvent：command 属性

Baseline 2025
Newly available

Since ⁨December 2025⁩, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

CommandEvent 接口的只读属性 command 返回一个表示派发该事件的元素的 command 属性值的字符串。

值

字符串。

示例

在下面的简单示例中，我们设置了一个事件监听器来监听“show-modal”命令：

js
document.body.addEventListener(
  "command",
  (event) => {
    const theAction = event.command;

    if (theAction === "show-modal") {
      console.log("展示模态对话框");
    }
  },
  { capture: true },
);

规范

Specification
HTML
# dom-commandevent-command

浏览器兼容性

参见

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