微信小程序实现倒计时60s获取验证码

本文实例为大家分享了微信小程序倒计时获取验证码的具体代码，供大家参考，具体内容如下

1、工具类（引用微信小程序提供的工具类）

countdown.js

class countdown {
constructor(options = {}) {
object.assign(this, {
options, 
})
this.__init()
}
/**
* 初始化
*/
__init() {
this.page = getcurrentpages()[getcurrentpages().length - 1]
this.setdata = this.page.setdata.bind(this.page)
this.restart(this.options)
}
/**
* 默认参数
*/
setdefaults() {
return {
date: `june 7, 2087 15:03:25`, 
refresh: 1000, 
offset: 0, 
onend() {}, 
render(date) {}, 
}
}
/**
* 合并参数
*/
mergeoptions(options) {
const defaultoptions = this.setdefaults()
for (let i in defaultoptions) {
if (defaultoptions.hasownproperty(i)) {
this.options[i] = typeof options[i] !== `undefined` ? options[i] : defaultoptions[i]
if (i === `date` && typeof this.options.date !== `object`) {
this.options.date = new date(this.options.date)
}
if (typeof this.options[i] === `function`) {
this.options[i] = this.options[i].bind(this)
}
}
}
if (typeof this.options.date !== `object`) {
this.options.date = new date(this.options.date)
}
}
/**
* 计算日期差
*/
getdiffdate() {
let diff = (this.options.date.gettime() - date.now() + this.options.offset) / 1000
let datedata = {
years: 0,
days: 0,
hours: 0,
min: 0,
sec: 0,
millisec: 0,
}
if (diff <= 0) {
if (this.interval) {
this.stop()
this.options.onend()
}
return datedata
}
if (diff >= (365.25 * 86400)) {
datedata.years = math.floor(diff / (365.25 * 86400))
diff -= datedata.years * 365.25 * 86400
}
if (diff >= 86400) {
datedata.days = math.floor(diff / 86400)
diff -= datedata.days * 86400
}
if (diff >= 3600) {
datedata.hours = math.floor(diff / 3600)
diff -= datedata.hours * 3600
}
if (diff >= 60) {
datedata.min = math.floor(diff / 60)
diff -= datedata.min * 60
}
datedata.sec = math.round(diff)
datedata.millisec = diff % 1 * 1000
return datedata
}
/**
* 补零
*/
leadingzeros(num, length = 2) {
num = string(num)
if (num.length > length) return num
return (array(length + 1).join(`0`) + num).substr(-length)
}
/**
* 更新组件
*/
update(newdate) {
this.options.date = typeof newdate !== `object` ? new date(newdate) : newdate
this.render()
return this
}
/**
* 停止倒计时
*/
stop() {
if (this.interval) {
clearinterval(this.interval)
this.interval = !1
}
return this
}
/**
* 渲染组件
*/
render() {
this.options.render(this.getdiffdate())
return this
}
/**
* 启动倒计时
*/
start() {
if (this.interval) return !1
this.render()
if (this.options.refresh) {
this.interval = setinterval(() => {
this.render()
}, this.options.refresh)
}
return this
}
/**
* 更新offset
*/
updateoffset(offset) {
this.options.offset = offset
return this
}
/**
* 重启倒计时
*/
restart(options = {}) {
this.mergeoptions(options)
this.interval = !1
this.start()
return this
}
}

export default countdown

2、wxml部分：

<view class="weui-cell__ft">
 <view class="weui-vcode-btn" bindtap="vcode">{{ c2 || '获取验证码' }}</view>
</view>

3、js部分:

import $wuxcountdown from 'countdown/countdown'
export {
 $wuxcountdown, 
}
import { $wuxcountdown } from '../../components/wux'
 vcode: function () {
 if (this.c2 && this.c2.interval) return !1
 this.c2 = new $wuxcountdown({
 date: +(new date) + 60000,
 onend() {
 this.setdata({
  c2: '重新获取验证码',
 })
 },
 render(date) {
 const sec = this.leadingzeros(date.sec, 2) + ' 秒后重发 '
 date.sec !== 0 && this.setdata({
  c2: sec,
 })
 },
 })
 }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。