<input  bindinput=‘getInputValue‘  name=‘price‘ type=‘text‘ placeholder=‘输入内容‘></input>

getInputValue(e){
  console.log(e.detail)// {value: "ff", cursor: 2}  
}

<form bindsubmit=‘loginForm‘>
  <text class=‘login-title‘>用户登录：</text>
  <input type=‘text‘ name=‘username‘ placeholder="请输入用户名"></input>
  <input type=‘password‘ name=‘password‘ placeholder="请输入账号密码"></input>
  <view class=‘ligin-button‘>
    <button formType="submit" type=‘primary‘>点击提交</button>
    <button formType="reset" type=‘primary‘>重置数据表单</button>
  </view>
</form>

loginForm: function(data) {
    console.log(data.detail.value)//  {username: "hgj", password: "fsdfsd"}
    var username = data.detail.value.username
    var password = data.detail.value.password;
}