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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