onmessage
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2017年8月.
message 事件是在窗口接受到消息（例如，从另一个浏览器上下文中调用 Window.postMessage()）时，在 Window 对象上触发的事件。
语法
window.addEventListener('message', function(event) { ... })
window.onmessage = function(event) { ... }
规范
| Specification |
|---|
| HTML # event-message |
| HTML # handler-window-onmessage |
浏览器兼容性
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