[Java] vue验证码组件应用实例

<template> 
  <div class="join_formitem"> 
  <label class="enquiry">验证码<span>:</span></label> 
  <div class="captcha"> 
    <input type="text" placeholder="请输入验证码" class="verification_input" v-model="picverification" /> 
    <input type="button" @click="createdcode" class="verification" v-model="checkcode" /> 
  </div> 
  </div> 
</template> 
<script>
export default {
 data(){
  return{
   code:'',
   checkcode:'',      
   picverification:''   //..验证码图片
  }
 },
 created(){
  this.createdcode()
 },
 methods: {
  // 图片验证码
  createdcode(){
   // 先清空验证码输入
   this.code = ""
   this.checkcode = ""
   this.picverification = ""
   // 验证码长度
   const codelength = 4
   // 随机数
   const random = new array(0,1,2,3,4,5,6,7,8,9,'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z')
   for(let i = 0;i < codelength;i++){
  // 取得随机数的索引(0~35)
  let index = math.floor(math.random() * 36)
  // 根据索引取得随机数加到code上
  this.code += random[index]
   }
   // 把code值赋给验证码
   this.checkcode = this.code
  }
 }
}
</script> 
<style>
.verification_input{
 font-family: 'exo 2',sans-serif;
 border: 1px solid #fff;
 color: black;
 outline: none;
 border-radius: 12px;
 letter-spacing: 1px;
 font-size: 17px;
 font-weight: normal;
 background-color: rgba(82,56,76,.15);
 padding: 5px 0 5px 10px;
 margin-left: 30px;
 height: 30px;
 margin-top: 25px;
 border: 1px solid #e6e6e6;
}
.verification{
 border-radius: 12px;
 width: 100px;
 letter-spacing: 5px;
 margin-left: 50px;
 height: 40px;
 transform: translate(-15px,0);
}
.captcha{
 height:50px;
 text-align: justify;
}
</style>