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

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"
}

index.wxml

<view class="login-header"><view class="label">用户登入</view>
</view>
<view class="login-form"><van-cell-group><!--  1.type 控制弹出手机键盘的类型2.maxlength 控制最大长度3.use-slot使用插槽4.placeholder-style占位内容样式--><van-field placeholder="请输入手机号码" type="number" maxlength="{{11}}" use-slot placeholder-style="color: #999999;"><!-- slot在官方文档里面有几个特定的类型，可以自己找来康康 --><view wx:if="{{!countDownVisble}}" slot="button"><van-button size="small" type="primary" bind:tap="sendCode">发送验证码</van-button></view><!-- 稍微调整一下文字位置 --><view slot="right-icon" wx:else style="margin-top: -20rpx;"><!-- 倒计时组件 --><!-- 1. time计时时常单位毫秒2.bind:change时间变化触发--><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><!-- 在行内写样式，如果在css文件里要提高权值才行 -->
<button size="mini" style="margin:30rpx 0 0 300rpx; background-color: palegreen; padding: 0 50rpx;">登入</button>

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;
}

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})}
})