mini-program-dev

# 微信小程序开发辅助

## 常用代码模板

### 页面结构

```javascript
// pages/demo/demo.js
Page({
  data: {
    message: 'Hello',
    list: [],
    loading: false
  },

  onLoad(options) {
    // 页面加载
    this.fetchData();
  },

  onShow() {
    // 页面显示
  },

  onPullDownRefresh() {
    // 下拉刷新
    this.fetchData().then(() => {
      wx.stopPullDownRefresh();
    });
  },

  fetchData() {
    this.setData({ loading: true });
    return new Promise((resolve, reject) => {
      wx.request({
        url: 'https://api.example.com/data',
        success: res => {
          this.setData({ 
            list: res.data,
            loading: false 
          });
          resolve(res);
        },
        fail: reject
      });
    });
  },

  handleTap(e) {
    console.log('tap', e.currentTarget.dataset);
  }
})
```

```xml
<!-- pages/demo/demo.wxml -->
<view class="container">
  <text class="title">{{message}}</text>
  
  <block wx:for="{{list}}" wx:key="id">
    <view class="item" bindtap="handleTap" data-id="{{item.id}}">
      {{item.name}}
    </view>
  </block>

  <loading wx:if="{{loading}}">加载中...</loading>
</view>
```

```css
/* pages/demo/demo.wxss */
.container {
  padding: 20rpx;
}

.title {
  font-size: 32rpx;
  font-weight: bold;
  display: block;
  margin-bottom: 20rpx;
}

.item {
  padding: 20rpx;
  border-bottom: 1rpx solid #eee;
}
```

### 常用 API

```javascript
// 提示框
wx.showToast({ title: '成功', icon: 'success' });
wx.showModal({ title: '提示', content: '确认？' });

// 跳转页面
wx.navigateTo({ url: '/pages/detail/detail?id=1' });
wx.redirectTo({ url: '/pages/detail/detail' });
wx.switchTab({ url: '/pages/index/index' });

// 存储
wx.setStorageSync('key', 'value');
const value = wx.getStorageSync('key');

// 授权
wx.getUserProfile({
  success: res => {
    console.log(res.userInfo);
  }
});

// 支付
wx.requestPayment({
  timeStamp: '',
  nonceStr: '',
  package: '',
  signType: 'MD5',
  paySign: '',
  success: () => {},
  fail: () => {}
}...