Vue6_计算属性computed:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <script src="https://www.qianduanzhan.com"></script></head><body><div id="app1"> <input type="text" v-model="n1"> + <input type="text" v-model="n2"> = <input type="text" v-model="sum"></div><script> var app = new Vue({ el:'#app1', data:{ n1:'2', n2:'3' }, computed:{ sum:function(){ return this.n1*1 + this.n2*1; } } });</script></body></html>