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    1. ×¢²áС³ÌÐò¿ª·¢ÕßÕ˺Å

    2. ÏÂÔØ²¢°²×°Î¢ÐÅ¿ª·¢Õß¹¤¾ß

    3. Ñ¡Ôñ¡°Ð¡³ÌÐò¡±ÏîÄ¿²¢´´½¨ÐÂÏîÄ¿

    Èý¡¢¿ìµÝ²éѯС³ÌÐò¿ª·¢²½Öè

    1. Éè¼Æ½çÃæ

    Ê×ÏÈ£¬ÎÒÃÇÐèÒªÉè¼ÆÒ»¸ö¼ò½àÒ×ÓõĽçÃæ¡£ÕâÀïÎÒÃǽ«´´½¨Á½¸öÒ³Ãæ£ºÃÀ²Ê¹ú¼ÊÓÃÓÚ¿ìµÝµ¥ºÅÊäÈëºÍ²éѯ°´Å¥£¬²éѯ½á¹ûÒ³ÃæÓÃÓÚչʾ²éѯ½á¹û¡£

    2. ±àдÃÀ²Ê¹ú¼Êwxml´úÂë

    ÔÚÃÀ²Ê¹ú¼ÊµÄwxmlÎļþÖУ¬ÎÒÃÇÐèÒªÌí¼ÓÒ»¸öÊäÈë¿òºÍÒ»¸ö²éѯ°´Å¥¡£´úÂëÈçÏ£º

    ```html

    <view>

    <input placeholder="ÇëÊäÈë¿ìµÝµ¥ºÅ" bindinput="inputChange" />

    <button type="primary" bindtap="queryExpress">²éѯ¿ìµÝ</button>

    </view>

    ```

    3. ±àдÃÀ²Ê¹ú¼Êjs´úÂë

    ÔÚÃÀ²Ê¹ú¼ÊµÄjsÎļþÖУ¬ÎÒÃÇÐèÒª±àдinputChangeºÍqueryExpressÁ½¸ö·½·¨¡£inputChange·½·¨ÓÃÓÚʵʱ¸üÐÂÓû§ÊäÈëµÄ¿ìµÝµ¥ºÅ£¬queryExpress·½·¨ÓÃÓÚ´¦Àí²éѯ°´Å¥µÄµã»÷ʼþ¡£´úÂëÈçÏ£º

    ```javascript

    Page({

    data: {

    expressNum: ""

    },

    inputChange(e) {

    this.setData({

    expressNum: e.detail.value

    });

    },

    queryExpress() {

    if (!this.data.expressNum) {

    wx.showToast({

    title: "ÇëÊäÈë¿ìµÝµ¥ºÅ",

    icon: "none"

    });

    return;

    }

    wx.navigateTo({

    url: `/pages/result/result?expressNum=${this.data.expressNum}`

    });

    }

    });

    ```

    4. ±àд²éѯ½á¹ûÒ³Ãæwxml´úÂë

    ²éѯ½á¹ûÒ³ÃæÖ÷ÒªÓÃÓÚչʾ²éѯµ½µÄ¿ìµÝÐÅÏ¢¡£ÎÒÃÇ¿ÉÒÔʹÓÃÁбíµÄÐÎʽչʾÿһ¸ö¿ìµÝ½Úµã¡£´úÂëÈçÏ£º

    ```html

    <view>

    <view wx:for="{{expressData}}">

    <view>

    <text>{{item.time}}</text>

    <text>{{item.context}}</text>

    </view>

    </view>

    </view>

    ```

    5. ±àд²éѯ½á¹ûÒ³Ãæjs´úÂë

    ²éѯ½á¹ûÒ³ÃæµÄjsÎļþÖУ¬ÎÒÃÇÐèÒªµ÷ÓÿìµÝ²éѯ½Ó¿Ú»ñÈ¡¿ìµÝÐÅÏ¢£¬²¢½«²éѯ½á¹û°ó¶¨µ½Ò³Ãæ¡£´úÂëÈçÏ£º

    ```javascript

    Page({

    data: {

    expressNum: "",

    expressData: []

    },

    onLoad(options) {

    this.setData({

    expressNum: options.expressNum

    });

    this.getExpressInfo();

    },

    async getExpressInfo() {

    try {

    const res = await wx.request({

    url: `https://api.example.com/query?number=${this.data.expressNum}`

    });

    if (res.data.code === 200) {

    this.setData({

    expressData: res.data.data

    });

    } else {

    wx.showToast({

    title: "²éѯʧ°Ü£¬ÇëÉÔºóÖØÊÔ",

    icon: "none"

    });

    }

    } catch (error) {

    wx.showToast({

    title: "²éѯʧ°Ü£¬ÇëÉÔºóÖØÊÔ",

    icon: "none"

    });

    }

    }

    });

    ```

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