微信小程序---密码输入

设计支付密码的输入框

效果如下：

源码：github地址：https://github.com/fiveTree/-_-

干货：

<view class="pay">
<view class="title">支付方式</view>
<view catchtap="wx_pay" class="wx_pay">
<i class="icon {{payment_mode==1?'active':''}}" type="String"></i>
<text>微信支付</text>
</view>
<view catchtap="offline_pay" class="offline_pay">
<i class="icon {{payment_mode==0?'active':''}}" type="String"></i>
<text>对公打款</text>
</view>
<block wx:if="{{balance!=0}}">
<view catchtap="wallet_pay" class="wallet_pay">
<i class="icon {{payment_mode==2?'active':''}}" type="String"></i>
<text>钱包支付(余额:{{balance/100}}元)</text>
</view>
</block>
<block wx:if="{{balance==0}}">
<view class="wallet_pay">
<i class="icon" type="String" style="background:#e8e8e8;border:none;"></i>
<text style="color:#999">钱包支付(余额不足)</text>
</view>
</block>
</view>
<view catchtap="pay" class="save">确定</view>
<!--输入钱包密码-->
<view wx:if="{{wallets_password_flag}}" class="wallets-password">
<view class="input-content-wrap">
<view class="top">
<view catchtap="close_wallets_password" class="close">×</view>
<view class="txt">请输入支付密码</view>
<view catchtap="modify_password" class="forget">忘记密码</view>
</view>
<view class="actual_fee">
<span>￥</span>
<text>{{actual_fee/100}}</text>
</view>
<view catchtap="set_Focus" class="input-password-wrap">
<view class="password_dot">
<i wx:if="{{wallets_password.length>=1}}"></i>
</view>
<view class="password_dot">
<i wx:if="{{wallets_password.length>=2}}"></i>
</view>
<view class="password_dot">
<i wx:if="{{wallets_password.length>=3}}"></i>
</view>
<view class="password_dot">
<i wx:if="{{wallets_password.length>=4}}"></i>
</view>
<view class="password_dot">
<i wx:if="{{wallets_password.length>=5}}"></i>
</view>
<view class="password_dot">
<i wx:if="{{wallets_password.length>=6}}"></i>
</view>
</view>
</view>
<input bindinput="set_wallets_password" class="input-content" password type="number" focus="{{isFocus}}" maxlength="6" />
</view>

//index.js

Page({
  data: {
    payment_mode: 1,//默认支付方式 微信支付
    isFocus: false,//控制input 聚焦
    balance:100,//余额
    actual_fee:20,//待支付
    wallets_password_flag:false//密码输入遮罩
  },
  //事件处理函数
 
  onLoad: function () {
    
  },
  wx_pay() {//转换为微信支付
    this.setData({
      payment_mode: 1
    })
  },
  offline_pay() {//转换为转账支付
    this.setData({
      payment_mode: 0
    })
  },
  wallet_pay() {
    this.setData({//转换为钱包支付
      payment_mode: 2
    })
  },
  set_wallets_password(e) {//获取钱包密码
    this.setData({
      wallets_password: e.detail.value
    });
    if (this.data.wallets_password.length == 6) {//密码长度6位时，自动验证钱包支付结果
      wallet_pay(this)
    }
  },
  set_Focus() {//聚焦input
    console.log('isFocus', this.data.isFocus)
    this.setData({
      isFocus: true
    })
  },
  set_notFocus() {//失去焦点
    this.setData({
      isFocus: false
    })
  },
  close_wallets_password () {//关闭钱包输入密码遮罩
    this.setData({
      isFocus: false,//失去焦点
      wallets_password_flag: false,
    })
  },
  pay() {//去支付
    pay(this)
  }
})
/*-----------------------------------------------*/
/*支付*/
function pay(_this) {
  let apikey = _this.data.apikey;
  let id = _this.data.id;
  let payment_mode = _this.data.payment_mode
  if (payment_mode == 1) {
  //  微信支付
  // 微信自带密码输入框
    console.log('微信支付')
  } else if (payment_mode == 0) {
  //  转账支付 后续跳转至传转账单照片
    console.log('转账支付')
  } else if (payment_mode == 2) {
    // 钱包支付 输入密码
    console.log('钱包支付')
    _this.setData({
      wallets_password_flag: true,
      isFocus: true
    })
  }

}
// 钱包支付
function wallet_pay(_this) {
  console.log('钱包支付请求函数')
  /*
  1.支付成功
  2.支付失败：提示；清空密码；自动聚焦isFocus:true，拉起键盘再次输入
  */
}

index.wxss

page {
  height: 100%;
  width: 100%;
  background: #e8e8e8;
}

page .pay {
  display: flex;
  flex-direction: column;
  background: #fff;
}

page .pay .title {
  height: 90rpx;
  line-height: 90rpx;
  font-size: 28rpx;
  color: #353535;
  padding: 0 23rpx;
  border-bottom: 1rpx solid #ddd;
  box-sizing: border-box;
}

page .pay .wx_pay, page .pay .offline_pay, page .pay .wallet_pay {
  margin: 0 26rpx;
  height: 90rpx;
  line-height: 90rpx;
  border-bottom: 2rpx solid #ddd;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

page .pay .wx_pay .icon, page .pay .offline_pay .icon,
page .pay .wallet_pay .icon {
  width: 34rpx;
  height: 34rpx;
  border: 2rpx solid #ddd;
  box-sizing: border-box;
  border-radius: 50%;
}

page .pay .wx_pay .icon.active, page .pay .offline_pay .icon.active,
page .pay .wallet_pay .icon.active {
  border: 10rpx solid #00a2ff;
}

page .pay .wx_pay text, page .pay .offline_pay text, page .pay .wallet_pay text {
  margin-left: 20rpx;
  color: #353535;
  font-size: 26rpx;
}

page .pay .wallet_pay {
  border: 0;
  border-top: 2rpx solid #ddd;
}

page .pay .offline_pay {
  border: 0 none;
}

page .save {
  margin: 80rpx 23rpx;
  color: #fff;
  background: #00a2ff;
  height: 88rpx;
  line-height: 88rpx;
  text-align: center;
  font-size: 30rpx;
  border-radius: 10rpx;
}

page .wallets-password {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}

page .wallets-password .input-content-wrap {
  position: absolute;
  top: 200rpx;
  left: 50%;
  display: flex;
  flex-direction: column;
  width: 600rpx;
  margin-left: -300rpx;
  background: #fff;
  border-radius: 20rpx;
}

page .wallets-password .input-content-wrap .top {
  display: flex;
  align-items: center;
  height: 90rpx;
  border-bottom: 2rpx solid #ddd;
  justify-content: space-around;
}

page .wallets-password .input-content-wrap .top .close {
  font-size: 44rpx;
  color: #999;
  font-weight: 100;
}

page .wallets-password .input-content-wrap .top .forget {
  color: #00a2ff;
  font-size: 22rpx;
}

page .wallets-password .input-content-wrap .actual_fee {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  height: 100rpx;
  margin: 0 23rpx;
  border-bottom: 2rpx solid #ddd;
}

page .wallets-password .input-content-wrap .actual_fee span {
  font-size: 24rpx;
}

page .wallets-password .input-content-wrap .actual_fee text {
  font-size: 36rpx;
}

page .wallets-password .input-content-wrap .input-password-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 150rpx;
}

page .wallets-password .input-content-wrap .input-password-wrap .password_dot {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #000;
  box-sizing: border-box;
  width: 90rpx;
  height: 90rpx;
  border: 2rpx solid #ddd;
  border-left: none 0;
}

page .wallets-password .input-content-wrap .input-password-wrap .password_dot:nth-child(1) {
  border-left: 2rpx solid #ddd;
}

page .wallets-password .input-content-wrap .input-password-wrap .password_dot i {
  background: #000;
  border-radius: 50%;
  width: 20rpx;
  height: 20rpx;
}

page .wallets-password .input-content {
  position: absolute;
  opacity: 0;
  left: -100%;
  top: 600rpx;
  background: #f56;
  z-index: -999;
}

page .wallets-password .input-content.active {
  z-index: -99;
}

github地址：https://github.com/fiveTree/-_-