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這篇文章給大家分享的是有關微信小程序中如何實現獲取驗證碼倒計時60s功能的內容。小編覺得挺實用的,因此分享給大家做個參考,一起跟隨小編過來看看吧。
微信小程序倒計時獲取驗證碼的具體代碼,供大家參考,具體內容如下
1、工具類(引用微信小程序提供的工具類)
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) } /** * 默認參數 */ setDefaults() { return { date: `June 7, 2087 15:03:25`, refresh: 1000, offset: 0, onEnd() {}, render(date) {}, } } /** * 合并參數 */ 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) } } /** * 計算日期差 */ 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 } /** * 補零 */ leadingZeros(num, length = 2) { num = String(num) if (num.length > length) return num return (Array(length + 1).join(`0`) + num).substr(-length) } /** * 更新組件 */ update(newDate) { this.options.date = typeof newDate !== `object` ? new Date(newDate) : newDate this.render() return this } /** * 停止倒計時 */ stop() { if (this.interval) { clearInterval(this.interval) this.interval = !1 } return this } /** * 渲染組件 */ render() { this.options.render(this.getDiffDate()) return this } /** * 啟動倒計時 */ 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 } /** * 重啟倒計時 */ 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 || '獲取驗證碼' }}</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: '重新獲取驗證碼', }) }, render(date) { const sec = this.leadingZeros(date.sec, 2) + ' 秒后重發 ' date.sec !== 0 && this.setData({ c2: sec, }) }, }) }
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