vue.js实现计算器功能

效果图：

代码：

<template>
  <div id="app">
    <div class="calculator">
      <div class="display">
        <div class="input" @click="handleCursor">{
  
   
   { input }}</div>
        <div class="result">{
  
   
   { result }}</div>
      </div>
      <div class="buttons">
        <div class="row">
          <button class="button" @click="handleClear">AC</button>
          <button class="button" @click="handleBack">←</button>
          <button class="button" @click="handleOperator('mod')">%</button>
          <button class&#