zh_wx/pages/login/login.wxml

<view class="border">
<view class="container">
</view>
<view class="bdy">
<van-cell-group>
  <van-field
  model:value="{{ username }}"
    required
    clearable
    label="用户名"
    icon="question-o"
    placeholder="请输入用户名"
    bind:click-icon="onClickIcon"
  />

  <van-field
  model:value="{{ password }}"
    type="password"
    label="密码"
    placeholder="请输入密码"
    required
    border="{{ false }}"
  />
</van-cell-group>
</view>
<button bindtap="handleLogin" class="btn">登录</button>
</view>