微信小程序生成一个天气查询的小程序

// index.js
Page({
  data: {
    city: ''
  },
  onInput: function(e) {
    this.setData({
      city: e.detail.value
    });
  },
  onSearch: function() {
    wx.navigateTo({
      url: '/pages/weather?city=' + this.data.city
    });
  }
});

<!-- index.wxml -->
<view class="container">
  <input type="text" placeholder="请输入城市名称" bindinput="onInput"></input>
  <button bindtap="onSearch">查询</button>
</view>

/* index.wxss */
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

// weather.js
Page({
  data: {
    city: '',
    weather: ''
  },
  onLoad: function(options) {
    const city = options.city;
    this.setData({
      city: city
    });
    // 请求天气数据
    wx.request({
      url: 'https://api.weather.com/v1/current?city=' + city,
      success: res => {
        this.setData({
          weather: res.data.weather
        });
      }
    });
  }
});

<!-- weather.wxml -->
<view class="container">
  <view class="weather-info">{{ weather }}</view>
</view>

/* weather.wxss */
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.weather-info {
  font-size: 20px;
}