初始化（包含登录模块）

pages/extUI/countdown/countdown.nvue

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+<template>
+	<view class="container">
+		<uni-card is-full>
+			<text class="uni-h6">倒计时组件主要用于促销商品剩余时间，发送短信验证等待时间等场景</text>
+		</uni-card>
+		<uni-section title="一般用法" type="line" padding>
+			<uni-countdown :day="1" :hour="1" :minute="12" :second="40" />
+		</uni-section>
+		<uni-section title="不显示天数" subTitle="设置 show-day = false 不显示天" type="line" padding>
+			<uni-countdown :show-day="false" :hour="12" :minute="12" :second="12" />
+		</uni-section>
+		<uni-section title="文字分隔符" subTitle="设置 show-colon 属性设置分隔符样式" type="line" padding>
+			<uni-countdown :minute="30" :second="0" :show-colon="false" />
+		</uni-section>
+		<uni-section title="修改颜色" subTitle="设置 color \ background 属性设置组件颜色" type="line" padding>
+			<uni-countdown :day="1" :hour="2" :minute="30" :second="0" color="#FFFFFF" background-color="#007AFF" />
+		</uni-section>
+		<uni-section title="修改字体大小" subTitle="设置 font-size 属性设置组件大小" type="line" padding>
+			<uni-countdown :font-size="30" :day="1" :hour="2" :minute="30" :second="0" />
+		</uni-section>
+		<uni-section title="修改颜色 + 字体大小" type="line" padding>
+			<uni-countdown :font-size="30" :day="1" :hour="2" :minute="30" :second="0" color="#FFFFFF"
+				background-color="#007AFF" />
+		</uni-section>
+		<uni-section title="自由控制开始/暂停" subTitle="设置 start 属性控制是否自动开启" type="line" padding>
+			<uni-countdown :start="start" :day="1" :hour="1" :minute="12" :second="40" />
+		</uni-section>
+		<uni-section title="倒计时回调事件" type="line" padding>
+			<uni-countdown :show-day="false" :second="timeupSecond" @timeup="timeup" />
+		</uni-section>
+		<uni-section title="动态赋值" type="line" padding>
+			<uni-countdown :show-day="false" :hour="testHour" :minute="testMinute" :second="testSecond" />
+		</uni-section>
+	</view>
+</template>
+<script>
+	export default {
+		components: {},
+		data() {
+			return {
+				testHour: 1,
+				testMinute: 0,
+				testSecond: 0,
+				start: false,
+				timeupSecond: 10
+			}
+		},
+		mounted() {
+			setTimeout(() => {
+				this.testHour = 1
+				this.testMinute = 1
+				this.testSecond = 0
+				this.start = true
+			}, 3000)
+			setTimeout(() => {
+				this.start = false
+			}, 10000)
+		},
+		methods: {
+			timeup() {
+				uni.showToast({
+					title: '时间到'
+				})
+				this.timeupSecond = 29
+			}
+		}
+	}
+</script>
+
+<style lang="scss">
+</style>