[Improvement] Reorganize demos (#1052)

packages/datetime-picker/demo/index.vue

@@ -0,0 +1,69 @@
+<template>
+  <demo-section>
+    <demo-block :title="$t('title1')">
+      <van-datetime-picker
+        v-model="currentDate1"
+        type="datetime"
+        :min-date="minDate"
+        :max-date="maxDate"
+      />
+    </demo-block>
+
+    <demo-block :title="$t('title2')">
+      <van-datetime-picker
+        v-model="currentDate2"
+        type="date"
+        :min-date="minDate"
+      />
+    </demo-block>
+
+    <demo-block :title="$t('title3')">
+      <van-datetime-picker
+        v-model="currentDate3"
+        type="year-month"
+        :min-date="minDate"
+      />
+    </demo-block>
+
+    <demo-block :title="$t('title4')">
+      <van-datetime-picker
+        v-model="currentDate4"
+        type="time"
+        :min-hour="minHour"
+        :max-hour="maxHour"
+      />
+    </demo-block>
+  </demo-section>
+</template>
+
+<script>
+export default {
+  i18n: {
+    'zh-CN': {
+      title1: '选择完整时间',
+      title2: '选择日期（年月日）',
+      title3: '选择日期（年月）',
+      title4: '选择时间'
+    },
+    'en-US': {
+      title1: 'Choose DateTime',
+      title2: 'Choose Date',
+      title3: 'Choose Year-Month',
+      title4: 'Choose Time'
+    }
+  },
+
+  data() {
+    return {
+      minHour: 10,
+      maxHour: 20,
+      minDate: new Date(),
+      maxDate: new Date(2019, 10, 1),
+      currentDate1: new Date(2018, 0, 1),
+      currentDate2: null,
+      currentDate3: new Date(2018, 0, 1),
+      currentDate4: '12:00'
+    };
+  }
+};
+</script>