view>手机号：</view>
<input value="{{phone}}" bindinput="bindPhone" placeholder="请输入手机号"></input>

<view>验证码：
  <text>点击获取验证码</text>
</view>
<input value="{{code}}" bindinput="bindCode" placeholder="请输入验证码"></input>

  data: {
    phone:"",
    code:""
  },
  bindPhone:function(e){
    this.setData({phone:e.detail.value});
  },
  bindCode:function(e){
    this.setData({code:e.detail.value});
  },