vue自定義右鍵樣式的實(shí)例代碼

<!--template-->
<ul>
  <li class="role_list" 
	v-for="(item,index) in role" 
	:key="index"
	@contextmenu.prevent="(e)=>{
		x_index = e.layerX;
	    y_index = e.layerY;
		ctrlId = item.id;
		showMenu = true;
	}">
	  <img :src="item.head_portrait" alt="">
	  <p>{{item.name}}</p>
	</li>
</ul>

<template>
  <div class="modal_data_box">
    <ul>
      <li class="role_list" 
        v-for="(item,index) in role" 
        :key="index"
        @contextmenu.prevent="(e)=>{
          x_index = e.layerX;
          y_index = e.layerY;
          ctrlId = item.id;
          showMenu = true;
        }">
        <img :src="item.head_portrait" alt="">
        <p>{{item.name}}</p>
      </li>
    </ul>
	<!--組件-->
	<right-menu :x="x_index"
	      :y="y_index" 
	      :showMenu="showMenu"
	      @close="closeMenu"
	      @open="openDetail"
	      @del="delAttr"
	      @update="updateArr">
	</right-menu>
  </div>
</template>
<script>
  // 導(dǎo)入組件
	import rightMenu from '../module/right_menu.vue';
	export default{
		name:"roleModal",
		components:{rightMenu},
		data(){
			return {
				x_index:0,
				y_index:0,
				ctrlId:'',
				showMenu:false,
				role:[],
			}
		},
		methods:{
		  //關(guān)閉回調(diào) 
		  closeMenu(state){
		    console.log('關(guān)閉')
		    this.showMenu = state;
		  },
		  //打開(kāi)詳情回調(diào) 			
		  openDetail(){
		    console.log('編輯')
		  },
		  //刪除回調(diào) 			
		  delAttr(){
		    console.log('刪除')
		  },
		  //編輯回調(diào) 			
		  updateArr(){
		    console.log('編輯')
		  },
		}
	}
</script>

//原來(lái)的代碼
<ul>
  <li class="role_list" 
	v-for="(item,index) in role" 
	:key="index"
	@contextmenu.prevent="(e)=>{
		x_index = e.layerX;
	    y_index = e.layerY;
		ctrlId = item.id;
		showMenu = true;
	}">
	  <img :src="item.head_portrait" alt="">
	  <p>{{item.name}}</p>
	</li>
</ul>

//修改后的代碼，（由于要判斷，所以單獨(dú)寫(xiě)了個(gè)方法，把e跟item都傳過(guò)去）
<ul>
	<li class="role_list" 
		v-for="(item,index) in role" 
		:key="index"
		@contextmenu.prevent="(e)=>{
			rightClick(e,item)
		}">
		<img :src="item.head_portrait" alt="">
		<p>{{item.name}}</p>
	</li>
</ul>

//對(duì)應(yīng)的rightClick方法
rightClick(e,item){
	// 屏幕可見(jiàn)寬
	let clientWidth = document.body.clientWidth;
	// 菜單寬
	let menuWidth = 150;
	// 點(diǎn)擊右鍵時(shí)會(huì)返回對(duì)應(yīng)的clientX，用這個(gè)值與(clientWidth+菜單寬度)對(duì)比，如果大于的話(huà)，就把菜單左偏移一個(gè)菜單寬
	let clickClientX = e.clientX + menuWidth
	if(clickClientX > clientWidth){
		console.log("菜單超出視線范圍")
		this.x_index = e.layerX - menuWidth;
	}else{
		this.x_index = e.layerX;
	}
	this.y_index = e.layerY;
	this.ctrlId = item.id;
	this.showMenu = true;
},