<p data-height="265" data-theme-id="0" data-slug-hash="wjXLMa" data-default-tab="js,result" data-user="whjin" data-embed-version="2" data-pen-title="组件间通信" class="codepen">See the Pen 组件间通信 by whjin (@whjin) on CodePen.</p><script async src="[链接];></script>