vue+vant 实现手机号 获取验证码页面

html

         <van-field label="手机号"
                     v-model="phone"
                     center
                     required
                     placeholder="请输入手机号"
                     :border="true" />
          <van-field v-model="sms"
                     center
                     required
                     clearable
                     label="验证码"
                     placeholder="请输入验证码"
                     :border="false"
                     use-button-slot>
            <van-button slot="button"
                        size="small"
                        type="primary"
                        @click="gainCode">{{time}}</van-button>
          </van-field>

js

 data() {
    return {
      isClick: true,
      time: '获取验证码',
      phone: '',
      sms: '',
    }
  },
  methods:{
   // 获取验证码
    async gainCode() {
      if (this.isClick) {
        if (/^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/.test(this.phone)) {
          const res = await sendVerifyCode({ phone: this.phone })  // 获取验证码接口
          this.isClick = false
          let s = 60
          this.time = s + 's'
          let interval = setInterval(() => {
            s--
            this.time = s + 's'
            if (s < 0) {
              this.time = '重新获取'
              this.isClick = true
              clearInterval(interval)
            }
          }, 1000)
        } else {
          Toast.fail('请输入正确的手机号码')
        }
      }
    },
   }

效果