新增首页园区和商户的交互

components/picker/index.js

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+// components/picker/index.js
+Component({
+
+  /**
+   * 组件的属性列表
+   */
+  properties: {
+    valueKey: {
+      type: String,
+      default: "name"
+    },
+    show: Boolean,
+    columns: Array,
+    type: String
+  },
+
+  /**
+   * 组件的初始数据
+   */
+  data: {
+    // columns:['杭州', '宁波', '温州', '嘉兴', '湖州']
+  },
+
+  /**
+   * 组件的方法列表
+   */
+  methods: {
+    onClose() {
+      this.triggerEvent("close");
+    },
+    confirm(e) {
+      this.triggerEvent("ok", {...e.detail, type: this.data.type})
+    },
+    cancel() {
+      this.triggerEvent("cancel")
+    }
+  }
+})

components/picker/index.json

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+{
+  "component": true,
+  "usingComponents": {
+    "van-popup": "@vant/weapp/popup/index",
+    "van-picker": "@vant/weapp/picker/index"
+  }
+}

components/picker/index.wxml

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+<!--components/picker/index.wxml-->
+<van-popup 
+  show="{{ show }}" 
+  position="bottom"
+  bind:close="onClose"
+>
+  <view style="width: 100vw;">
+    <van-picker   show-toolbar
+  title="标题" columns="{{ columns }}" bind:change="onChange" value-key="name" bind:confirm="confirm" bind:cancel="cancel" />
+  </view>
+</van-popup>

components/picker/index.wxss

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+/* components/picker/index.wxss */