微信小程序（四十五）登入界面-简易版

注释很详细，直接上代码

上一篇

此文使用了vant组件库，没有安装配置的可以参考此篇vant组件的安装与配置

新增内容：

1.基础组件的组合

2.验证码倒计时的逻辑处理

源码：

app.json

{
  "usingComponents": {
    "van-field": "@vant/weapp/field/index",
    "van-count-down": "@vant/weapp/count-down/index",
    "van-button": "@vant/weapp/button/index"
  },
  "pages": [
    "pages/index/index"
  ],
  "window": {
    "navigationBarTextStyle": "black",
    "navigationBarTitleText": "Weixin",
    "navigationBarBackgroundColor": "#ffffff"
  },
  "componentFramework": "glass-easel",
  "sitemapLocation": "sitemap.json",
  "lazyCodeLoading": "requiredComponents"
}
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index.wxml

<view class="login-header">
  <view class="label">用户登入view>
view>
<view class="login-form">
  <van-cell-group>
  
    <van-field placeholder="请输入手机号码" type="number" maxlength="{{11}}" use-slot placeholder-style="color: #999999;">
      
      <view wx:if="{{!countDownVisble}}" slot="button">
        <van-button size="small" type="primary" bind:tap="sendCode">
          发送验证码
        van-button>
      view>
      
      <view slot="right-icon" wx:else style="margin-top: -20rpx;">
        
        
        <van-count-down use-slot time="{{60*1000}}" bind:change="countDownChange">
          <text style="color: #999999; ">
            {{timeData.seconds}}秒后重新获取
          text>
        van-count-down>
      view>
    van-field>

    <van-field placeholder="请输入6位数验证码" maxlength="{{6}}" placeholder-style="color:#999999" />
  van-cell-group>

  <view class="login-tip">未注册的手机号验证后将自动注册view>
view>


<button size="mini" style="margin:30rpx 0 0 300rpx; background-color: palegreen; padding: 0 50rpx;">登入button>
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index.wxss

.label{
  font: 1em SimHei;
  font-size: 50rpx;
  margin: 60rpx 0 50rpx 30rpx;
}

.login-tip{
  margin: 20rpx 0 90rpx 30rpx;
  color: #dadada;
  font-size: 27rpx;
}

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index.js

Page({
  data:{
    countDownVisble:false,//是否显示倒计时
    timeData: {}//时间数据
  },
  //发送验证码
  sendCode(){
    this.setData({
      countDownVisble:true
    })
  },
  //倒计时变化
  countDownChange(ev){
    //console.log(ev)
    this.setData({
      //倒计时组件数据
      timeData:ev.detail,
      //倒计时是否显示判断
      countDownVisble:ev.detail.minutes===1||ev.detail.seconds>0
    })
  }
})
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效果演示：（更加完善的会后续更新）