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docs/examples-dist/picker.vue

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+<template><section class="demo-picker"><h1 class="demo-title">picker</h1><example-block title="基础用法">
+                <zan-picker :columns="pickerColumns" @change="handlePickerChange"></zan-picker>
+
+              </example-block></section></template>
+
+<script>
+import Vue from "vue";import ExampleBlock from "../components/example-block";Vue.component("example-block", ExampleBlock);
+const citys = {
+  '浙江': ['杭州', '宁波', '温州', '嘉兴', '湖州', '绍兴', '金华', '衢州', '舟山', '台州', '丽水'],
+  '福建': ['福州', '厦门', '莆田', '三明', '泉州', '漳州', '南平', '龙岩', '宁德'],
+  '湖南': ['长沙', '株洲', '湘潭', '衡阳', '邵阳', '岳阳', '常德', '张家界', '益阳', '郴州', '永州', '怀化', '娄底', '湘西土家族苗族自治州']
+};
+
+export default {
+  data() {
+    return {
+      pickerColumns: [
+        {
+          values: Object.keys(citys),
+          className: 'column1'
+        },
+        {
+          values: ['杭州', '宁波', '温州', '嘉兴', '湖州', '绍兴', '金华', '衢州', '舟山', '台州', '丽水'],
+          className: 'column2'
+        }
+      ]
+    };
+  },
+
+  methods: {
+    handlePickerChange(picker, values) {
+      picker.setColumnValues(1, citys[values[0]]);
+    }
+  }
+};
+</script>