vue computed

it2022-05-06  0

computed 用来监听多个

代码:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <style> *{ padding: 0; margin: 0; } ul{ list-style: none; } ul li{ margin: 20px 20px; padding: 10px 5px; border-radius: 3px; } ul li.active{ background-color:rebeccapurple; } </style> </head> <body> <div id="app"> <audio :src = 'getCurrentSongSrc' autoplay controls></audio> </audio> <ul > <li v-for="(item,index) in musicData" :class = '{active:currentIndex == index}' @click = 'clickHandler(index)'> <p>歌手:{{item.auther}}</p> <P>{{item.kid}} - 歌名:{{item.name}}</P> </li> </ul> </div> <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script> <script type="text/javascript"> let musicData=[ { id:1,name:"我已经爱上你",auther:'二郎',src:'./static/情词尧,二郎 - 我已经爱上你(情词尧/二郎).mp3' },{ id:2,name:"JUNIEL - illa illa",auther:'일라 일라',src:'./static/JUNIEL - illa illa (일라 일라).mp3' }, { id:3,name:"体面",auther:'迟青',src:'./static/迟青 - 体面.mp3' },{ id:4,name:"私奔",auther:'曾轶可',src:'./static/曾轶可 - 私奔.mp3' } ] new Vue({ el:'#app', data() { return { musicData:musicData, currentIndex:0 } }, computed:{ getCurrentSongSrc:function() { // 默认只有getter return this.musicData[this.currentIndex].src } }, methods:{ clickHandler(index){ this.currentIndex = index; } } }); </script> </body> </html>

  效果:

 

转载于:https://www.cnblogs.com/guangzhou11/p/9526897.html

相关资源:数据结构—成绩单生成器

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