<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <title>directives</title> <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js" type="text/javascript" charset="utf-8"></script> </head> <body> <div id="app"> <input type="text" v-model="test" placeholder="请输入" v-focus v-color /> </div> </body> </html> <script type="text/javascript" charset="utf-8"> // 注册一个全局自定义指令 `v-focus` Vue.directive(‘focus‘, { // 当被绑定的元素插入到 DOM 中时 inserted: function(el) { // 聚焦元素 el.focus() } }) var app = new Vue({ el: "#app", data: { test: ‘‘ }, directives: { // 注册一个局部自定义指令 `v-color` color: { // 当被绑定的元素插入到 DOM 中时 inserted: function(el) { // 背景色为红色 el.style.background = "red"; } } } }); </script>
原文：https://www.cnblogs.com/antao/p/12985510.html