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
})
}, \'15811111111\', \'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;
}