CommandEvent：source 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 source 返回一个表示触发该命令的控件的 EventTarget。
值
EventTarget 对象。通常是一个 HTMLButtonElement。
示例
在下面的简单示例中，我们设置了一个事件监听器，在发生 CommandEvent 时向按钮元素添加一个临时类：
js
document.body.addEventListener(
"command",
(event) => {
const theButton = event.source;
theButton.classList.add("just-pressed");
setTimeout(() => {
theButton.classList.remove("just-pressed");
}, 1000);
},
{ capture: true },
);
规范
| Specification |
|---|
| HTML # dom-commandevent-source |