feat: Add example-page demo

src/hooks/web/useEmitt.ts

@@ -0,0 +1,23 @@
+import mitt from 'mitt'
+import { onBeforeUnmount } from 'vue'
+
+interface Option {
+  name: string // 事件名称
+  callback: Fn // 回调
+}
+
+const emitter = mitt()
+
+export const useEmitt = (option?: Option) => {
+  if (option) {
+    emitter.on(option.name, option.callback)
+
+    onBeforeUnmount(() => {
+      emitter.off(option.name)
+    })
+  }
+
+  return {
+    emitter
+  }
+}