小程序密码输入框

小程序密码输入框。

初始状态为input不能点击。

点击input以后弹出键盘。输入框全部输入以后可以点击提交。

具体代码：

<view class="Toptitle">请设置支付密码并妥善保管</view>
<form bindsubmit="formSubmit">
  <view class='content'>
    <block wx:for="{{Length}}" wx:key="item">
      <input class='iptbox' value="{{Value.length>=index+1?Value[index]:''}}" disabled password='{{ispassword}}' catchtap='Tap'></input>
    </block>
  </view>
  <input name="password" password="{{true}}" class='ipt' maxlength="{{Length}}" focus="{{isFocus}}" bindinput="Focus"></input>
  <view>
    <button class="btn-area" type='primary' disabled='{{disabled}}' formType="primary">下一步</button>
  </view>
</form>

CSS方面很简单：

.Toptitle{
  text-align: center;
  margin: 60rpx auto 46rpx;
  font-size: 26rpx;
}
.content{
  width: 660rpx;
  padding:0 45rpx;
  display: flex;
  justify-content: space-around;
  align-items: center;
  margin-top: 100rpx;
}
.iptbox{
  width: 110rpx;
  height: 96rpx;
  border:1rpx solid #ddd;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.ipt{
  width: 0;
  height: 0;
}
.btn-area{
  width: 80%;
  margin-top: 60rpx;
}

重点是JS。焦点弹出输入法，失去焦点以后进入下一个。

Page({
  data: {
    Length: 6,        //输入框个数
    isFocus: true,    //聚焦
    Value: "",        //输入的内容
    ispassword: true, //是否密文显示 true为密文， false为明文。
    disabled:true,
  },
  Focus(e) {
    var that = this;
    console.log(e.detail.value);
    var inputValue = e.detail.value;
    var ilen = inputValue.length;
    if(ilen == 6){
      that.setData({
        disabled: false,
      })
    }else{
      that.setData({
        disabled: true,
      })
    }
    that.setData({
      Value: inputValue,
    })
  },
  Tap() {
    var that = this;
    that.setData({
      isFocus: true,
    })
  },
  formSubmit(e) {
    console.log(e.detail.value.password);
  },

  onLoad: function (options) {
  
  },
  onShow: function () {
  
  },
})