#### 入口页面 index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>可从外部关闭的下拉菜单</title> <link type="text/css" href="https://www.jb51.net/style.css" > </head> <body> <div v-cloak> <div v-clickoutside="handleClose"> <button @click="show = !show">点击显示下拉菜单</button> <div v-show="show"> <p>下拉框的内容，点击外面区域可以关闭</p> </div> </div> </div> <script src="https://unpkg.com/vue/dist/vue.js"></script> <script src="https://www.jb51.net/clickoutside.js"></script> <script src="https://www.jb51.net/index.js"></script> </body> </html>
根实例 index.js
var app = new Vue({ el: '#app', data: { show: false }, methods: { handleClose () { this.show = false; } } });
下拉框组件 clickoutside.js
Vue.directive('clickoutside',{ bind: function (el, binding, vnode) { function documentHandler(e) { if(el.contains(e.target)){ return false; } if(binding.expression){ binding.value(e); } } el.__vueClickOutside__ = documentHandler; document.addEventListener('click',documentHandler); }, unbind: function (el, binding) { document.removeEventListener('click', el.__vueClickOutside__); delete el.__vueClickOutside__; } });
样式表
[v-cloak]{ display: none; } .main{ width: 125px; } button{ display: block; width: 100%; color: #fff; background-color: #39f; border: 0; padding: 6px; text-align: center; font-size: 12px; border-radius: 4px; cursor: pointer; outline: none; position: relative; } button:active{ top:1px; left: 1px; } .dropdown{ width:100%; height: 150px; margin: 5px 0; font-size: 12px; background-color: #fff; border-radius: 4px; box-shadow: 0 1px 6px rgba(0,0,0,.2); } .dropdown p{ display: inline-block; padding: 6px; }