refactor

src/components/TestComponent.vue

@@ -0,0 +1,18 @@
+<template>
+  <div class="my-component">
+    <slot name="header"></slot>
+    <slot name="extra"></slot>
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'MyComponent',
+};
+</script>
+
+<style scoped>
+.my-component {
+  /* 添加样式 */
+}
+</style>