过滤器
对要显示的数据进行特定格式化后再显示
并未改变原本的数据，可是产生新的对应的数据
-
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>10_Vue_filter</title> <link rel="stylesheet" type="text/css" href="./css/index.css"> </head> <body> <div id="test"> <p>{{curTime | timeFormat}}</p> </div> <script src="https://cdn.bootcss.com/moment.js/2.24.0/moment.js"></script> <script src="./js/vue.js"></script> <script> Vue.filter("timeFormat", function (value, timeType="YYYY-MM-DD HH:mm:ss") { let newValue = moment(value).format(timeType); return (newValue === "Invalid date")?"":newValue; }); new Vue({ el: "#test", data:{ curTime: "" }, mounted(){ setInterval(()=>{ this.curTime = Date.now(); }, 1000) } }); </script> </body> </html>