微信小程序实现发送验证码按钮效果

<view class="form_group">
  <input type="text" placeholder="手机号码" placeholder-class="placeholder_style" data-name="data_phone" value="{{data_phone}}" bindinput='getInputKey' />
 </view>
 <view class="form_group">
  <input type="text" class="sendmsg_input" placeholder="短信验证码" data-name="data_code" value="{{data_code}}" placeholder-class="placeholder_style" bindinput='getInputKey' />
  <view class='vertificate' bindtap="getVerificationCode">{{time}}
  <text>{{suffix}}</text>
  </view>
 </view>

.form_group {
 display: flex;
 flex-direction: row;
 justify-content: space-between;
}

.form_group input, .form_group picker {
 width: 676rpx;
 border-bottom: 1px solid #ddd;
 height: 121rpx;
 padding-left: 20rpx;
 font-family: PingFangSC-Regular;
 font-size: 32rpx;
 letter-spacing: 0;
 line-height: 121rpx;
}

.form_group .sendmsg_input {
 width: 370rpx;
}

.form_group .vertificate {
 width: 326rpx;
 border-bottom: 1px solid #ddd;
 height: 121rpx;
 padding-left: 20rpx;
 font-family: PingFangSC-Regular;
 font-size: 32rpx;
 letter-spacing: 0;
 line-height: 121rpx;
 text-align: center;
 color: #34c9c3;
}

.vertificate text {
 color: gray;
}

.placeholder_style {
 font-family: PingFangSC-Regular;
 font-size: 32rpx;
 color: #dbdbdb;
 letter-spacing: 0;
}

import SignupService from '../service/sign-up.service.js';
import HTTP from '../../../utils/http.js';
import Util from '../../../utils/util.js';

let _signupService = new SignupService();
let _http = new HTTP();
let _util = new Util();

Page({
 data: {
 time: "获取验证码",
 currentTime: 61,
 disabled:false,
 suffix:'',
 data_phone:'',
 data_code:'',
 },
 
 ...
 
 // 获取输入框的值
 getInputKey(e) {
 let key = e.currentTarget.dataset.name;
 let value = e.detail.value;
 this.setData({
  [key]: value
 })
 },

 // 获取验证码
 getVerificationCode() {
 let _this = this;
 if (!_this.data.disabled) {
  _this.getCode();
 }
 },

 getCode() {
 let _this = this;
 let phone = _this.data.data_phone;
 if (_util.isPhoneAvailable(phone)) {
  _signupService.getCode(phone).then(res=>{  // 调用后端API，获取手机验证码
  _util.showToast('success',"已发送");
  _this.setData({
   disabled: true
  })
  },err=>{
  _util.showToast('none',"发送失败")
  });
  
  // 设置发送验证码按钮样式
  let interval = null;
  let currentTime = _this.data.currentTime;

  interval = setInterval(function() {
  currentTime--;
  _this.setData({
   time: currentTime,
   suffix: '秒后可重新获取'
  })
  if (currentTime <= 0) {
   clearInterval(interval)
   _this.setData({
   time: '重新发送',
   suffix: '',
   currentTime: 61,
   disabled: false
   })
  }
  }, 1000)
 } else {
  _util.showToast('none','请输入正确的手机号码。');  
 }
 },

//获取手机验证码
 getCode(phone){
 return _http.request({
  type: 'post',
  url: '/account/validate-codes',
  data: {
  phone:phone
  }
 })
 }

class HTTP {
 request(param){
 let _this = this;
 let baseUrl = '.......';
 return new Promise((resolve, reject) => {
  let access_token = wx.getStorageSync('access_token');
  wx.request({
  method: param.type || 'get',
  url: baseUrl+ param.url || '',
  data: param.data || null,
  header: access_token ? {
   'content-type': 'application/x-www-form-urlencoded',
   "Authorization": `Bearer ${access_token}`
  } : {
   'content-type': 'application/x-www-form-urlencoded',
  },
  success: (res => {
   if (res.statusCode === 200 || res.statusCode === 201) {
   //200: 服务端业务处理正常结束
   resolve(res.data)
   } else {
   //其它错误，提示用户错误信息
    
   /*** 
    * 需要根据接口文档改！！！
   */
   reject(res)
   }
  }),
  fail: (err => {
   if(err.responseJSON){
   reject(err.responseJSON.message)
   }else{
   reject(err);
   }
  })
  });
 });
 }
}

export default HTTP;

 // 验证手机号码是否有效
 isPhoneAvailable(phone) {
 var myreg = /^[1][3,4,5,7,8][0-9]{9}$/;
 if (!myreg.test(phone)) {
  return false;
 } else {
  return true;
 }
 }
 
//小程序弹框提示
 showToast(icon,msg,duration=2000){
 wx.showToast({
  title: msg,
  duration: duration,
  icon: icon
 })
 }