分享记录vue3+ts的超简单且通俗易懂的右键菜单。

<template>
  <div id="app">
    <div
      class="context-menu"
      :style="{ top: top + 'px', left: left + 'px', display: display }"
    >
      <ul>
        <li @click="handleClick('选项1')">选项1</li>
        <li @click="handleClick('选项2')">选项2</li>
        <li @click="handleClick('其他')">其他</li>
      </ul>
    </div>
    <div id="content" @contextmenu.prevent="openMenu">
      右键点击这里查看菜单
    </div>
  </div>
</template>
 
<script lang="ts">
import { defineComponent, ref } from 'vue';
 
export default defineComponent({
  setup() {
    const top = ref(0);
    const left = ref(0);
    const display = ref('none');
 
    const openMenu = (event: MouseEvent) => {
      top.value = event.clientY;
      left.value = event.clientX;
      display.value = 'block';
    };
 
    const handleClick = (action: string) => {
      alert(`你选择了: ${action}`);
      display.value = 'none';
    };
 
    return { top, left, display, openMenu, handleClick };
  }
});
</script>
 
<style>
#content {
  width: 200px;
  height: 200px;
  border: 1px solid #000;
  margin: 20px;
}
 
.context-menu {
  position: absolute;
  background-color: #fff;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  user-select: none;
  z-index: 1000;
}
 
.context-menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}
 
.context-menu li {
  padding: 8px 12px;
  cursor: pointer;
  border-bottom: 1px solid #eee;
}
 
.context-menu li:last-child {
  border-bottom: none;
}
 
.context-menu li:hover {
  background-color: #f0f0f0;
}
</style>

这段代码展示了如何在Vue 3和TypeScript中创建一个基本的右键菜单。用户在指定区域右键点击时，会打开一个上下文菜单，并可以选择不同的选项。选择某个选项后，会通过弹窗显示选择，并关闭菜单。这个例子简单易懂，适合新手学习和实践。