示意圖：

點(diǎn)擊前.png

點(diǎn)擊后.png

wxml

<button disabled='{{disabled}}' data-id="2" bindtap="getVerificationCode">
{{time}}
</button>

js

var interval = null //倒計時函數(shù)
Page({
 data: {
 fun_id:2,
 time: '獲取驗(yàn)證碼', //倒計時 
 currentTime:61
 }, 
 getCode: function (options){
 var that = this;
 var currentTime = that.data.currentTime
 interval = setInterval(function () {
 currentTime--;
 that.setData({
 time: currentTime+'秒'
 })
 if (currentTime <= 0) {
 clearInterval(interval)
 that.setData({
  time: '重新發(fā)送',
  currentTime:61,
  disabled: false
 })
 }
 }, 1000) 
 },
 getVerificationCode(){
 this.getCode();
 var that = this
 that.setData({
 disabled:true
 })
 },
 
})

wxss 自行補(bǔ)充