<template> 
  <div class="join_formitem"> 
    <label class="enquiry">驗證碼<span>:</span></label> 
    <div class="captcha"> 
      <input type="text" placeholder="請輸入驗證碼" 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:''     //..驗證碼圖片
  }
 },
 created(){
  this.createdCode()
 },
 methods: {
  // 圖片驗證碼
  createdCode(){
   // 先清空驗證碼輸入
   this.code = ""
   this.checkCode = ""
   this.picVerification = ""
   // 驗證碼長度
   const codeLength = 4
   // 隨機數
   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++){
    // 取得隨機數的索引(0~35)
    let index = Math.floor(Math.random() * 36)
    // 根據索引取得隨機數加到code上
    this.code += random[index]
   }
   // 把code值賦給驗證碼
   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>