微信小程序注册完整实例，发送短信验证码，带60秒倒计时功能，无需服务器端。效果图:

代码:

index.wxml

<!--index.wxml-->
<view class="container">
 <view class='row'>
 <input placeholder='请输入姓名' bindinput='bindNameInput'/> 
 </view>
 
 <view class='row'>
 <input placeholder='请输入手机号' bindinput='bindPhoneInput'/> 
 </view>
 <view class='row'>
 <input placeholder='请输验证码' bindinput='bindCodeInput' style='width:70%;'/> 
 <button class='codeBtn' bindtap='getCode' hidden='{{hidden}}' disabled='{{btnDisabled}}'>{{btnValue}}</button>
 </view>
 <view>
 <button class='save' bindtap='save' >保存</button>
 </view>
 
</view>

index.js

//index.js
var zhenzisms = require('../../utils/zhenzisms.js');
//获取应用实例
const app = getApp();
 
Page({
 data: {
 hidden: true,
 btnValue:'',
 btnDisabled:false,
 name: '',
 phone: '',
 code: '',
 second: 60
 },
 onLoad: function () {
 
 },
 //姓名输入
 bindNameInput(e) {
 this.setData({
 name: e.detail.value
 })
 },
 //手机号输入
 bindPhoneInput(e) {
 console.log(e.detail.value);
 var val = e.detail.value;
 this.setData({
 phone: val
 })
 if(val != ''){
 this.setData({
 hidden: false,
 btnValue: '获取验证码'
 })
 }else{
 this.setData({
 hidden: true
 })
 }
 },
 //验证码输入
 bindCodeInput(e) {
 this.setData({
 code: e.detail.value
 })
 },
 //获取短信验证码
 getCode(e) {
 console.log('获取验证码');
 var that = this;
 zhenzisms.client.init('https://sms_developer.zhenzikj.com', 'appId', 'appSecret');
 zhenzisms.client.send(function (res) {
 if(res.data.code == 0){
 that.timer();
 return ;
 }
 wx.showToast({
 title: res.data.data,
 icon: 'none',
 duration: 2000
 })
 }, '15801636347', '验证码为:3322');
 
 },
 timer: function () {
 let promise = new Promise((resolve, reject) => {
 let setTimer = setInterval(
 () => {
 var second = this.data.second - 1;
 this.setData({
 second: second,
 btnValue: second+'秒',
 btnDisabled: true
 })
 if (this.data.second <= 0) {
 this.setData({
 second: 60,
 btnValue: '获取验证码',
 btnDisabled: false
 })
 resolve(setTimer)
 }
 }
 , 1000)
 })
 promise.then((setTimer) => {
 clearInterval(setTimer)
 })
 },
 //保存
 save(e) {
 console.log('姓名: ' + this.data.name);
 console.log('手机号: ' + this.data.phone);
 console.log('验证码: ' + this.data.code);
 
 //省略提交过程
 }
})

index.wxss

/**index.wxss**/
page{
 height: 100%;
 width: 100%;
 background: linear-gradient(#5681d7, #486ec3);
 display: flex;
 flex-direction: column;
}
.container{
 display: flex;
 flex-direction: column;
 justify-content: space-around;
 width: 90%;
 margin: 50rpx auto;
}
 
.row{
 position: relative;
 height: 80rpx;
 width: 100%;
 border-radius: 10rpx;
 background: #fff;
 margin-bottom: 20rpx;
 padding-left: 20rpx;
 box-sizing: border-box;
}
.row input{
 width: 100%;
 height:100%;
}
.codeBtn{
 position: absolute;
 right: 0;
 top: 0;
 color: #bbb;
 width: 30%;
 font-size: 26rpx;
 height: 80rpx;
 line-height: 80rpx;
}
.subBtn{
 width: 200rpx;
 height: 80rpx;
 background: #fff;
 color: #000;
 border-radius: 50rpx;
 line-height: 80rpx;
}

完整下载: 下载

详情参考: http://smsow.zhenzikj.com/doc/sdk.html