uni-app实现秒杀循环商品倒计时效果
先看看效果吧先在components里面建一个countdown组件countdown.vue<template><view class="uni-countdown"><!-- <text v-if="showDay" :style="{ borderColor: borderColor, color: color, backgroundColor: back
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先看看效果吧
先在components里面建一个countdown组件
countdown.vue
<template>
<view class="uni-countdown">
<!-- <text v-if="showDay" :style="{ borderColor: borderColor, color: color, backgroundColor: backgroundColor }" class="uni-countdown__number">{{ d }}</text>
<text v-if="showDay" :style="{ color: splitorColor }" class="uni-countdown__splitor">天</text> -->
<text :style="{ borderColor: borderColor, color: color, backgroundColor: backgroundColor }" class="uni-countdown__number">{{ h }}</text>
<text :style="{ color: splitorColor }" class="uni-countdown__splitor">{{ showColon ? ':' : '时' }}</text>
<text :style="{ borderColor: borderColor, color: color, backgroundColor: backgroundColor }" class="uni-countdown__number">{{ i }}</text>
<text :style="{ color: splitorColor }" class="uni-countdown__splitor">{{ showColon ? ':' : '分' }}</text>
<text :style="{ borderColor: borderColor, color: color, backgroundColor: backgroundColor }" class="uni-countdown__number">{{ s }}</text>
<text v-if="!showColon" :style="{ color: splitorColor }" class="uni-countdown__splitor">秒</text>
</view>
</template>
<script>
/**
* Countdown 倒计时
* @description 倒计时组件
* @tutorial https://ext.dcloud.net.cn/plugin?id=25
* @property {String} backgroundColor 背景色
* @property {String} color 文字颜色
* @property {Number} day 天数
* @property {Number} hour 小时
* @property {Number} minute 分钟
* @property {Number} second 秒
* @property {Boolean} showDay = [true|false] 是否显示天数
* @property {Boolean} showColon = [true|false] 是否以冒号为分隔符
* @property {String} splitorColor 分割符号颜色
* @event {Function} timeup 倒计时时间到触发事件
* @example <uni-countdown :day="1" :hour="1" :minute="12" :second="40"></uni-countdown>
*/
export default {
name: 'UniCountdown',
props: {
showDay: {
type: Boolean,
default: true
},
showColon: {
type: Boolean,
default: true
},
backgroundColor: {
type: String,
default: '#FFFFFF'
},
borderColor: {
type: String,
default: '#000000'
},
color: {
type: String,
default: '#000000'
},
splitorColor: {
type: String,
default: '#000000'
},
day: {
type: Number,
default: 0
},
hour: {
type: Number,
default: 0
},
minute: {
type: Number,
default: 0
},
second: {
type: Number,
default: 0
}
},
data() {
return {
timer: null,
syncFlag: false,
d: '00',
h: '00',
i: '00',
s: '00',
leftTime: 0,
seconds: 0
}
},
watch: {
day(val) {
this.changeFlag()
},
hour(val) {
this.changeFlag()
},
minute(val) {
this.changeFlag()
},
second(val) {
this.changeFlag()
}
},
created: function(e) {
this.startData();
},
beforeDestroy() {
clearInterval(this.timer)
},
methods: {
toSeconds(day, hours, minutes, seconds) {
return day * 60 * 60 * 24 + hours * 60 * 60 + minutes * 60 + seconds
},
timeUp() {
clearInterval(this.timer)
this.$emit('timeup')
},
countDown() {
let seconds = this.seconds
let [day, hour, minute, second] = [0, 0, 0, 0]
if (seconds > 0) {
day = Math.floor(seconds / (60 * 60 * 24))
hour = Math.floor(seconds / (60 * 60)) - (day * 24)
minute = Math.floor(seconds / 60) - (day * 24 * 60) - (hour * 60)
second = Math.floor(seconds) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60)
} else {
this.timeUp()
}
if (day < 10) {
day = '0' + day
}
if (hour < 10) {
hour = '0' + hour
}
if (minute < 10) {
minute = '0' + minute
}
if (second < 10) {
second = '0' + second
}
this.d = day
this.h = hour
this.i = minute
this.s = second
},
startData() {
this.seconds = this.toSeconds(this.day, this.hour, this.minute, this.second)
if (this.seconds <= 0) {
return
}
this.countDown()
this.timer = setInterval(() => {
this.seconds--
if (this.seconds < 0) {
this.timeUp()
return
}
this.countDown()
}, 1000)
},
changeFlag() {
if (!this.syncFlag) {
this.seconds = this.toSeconds(this.day, this.hour, this.minute, this.second)
this.startData();
this.syncFlag = true;
}
}
}
}
</script>
<style scoped>
.uni-countdown {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: row;
justify-content: flex-start;
padding: 2rpx 0;
}
.uni-countdown__splitor {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
justify-content: center;
line-height: 48rpx;
padding: 5rpx;
font-size: 24rpx;
}
.uni-countdown__number {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
justify-content: center;
align-items: center;
width: 52rpx;
height: 48rpx;
line-height: 48rpx;
margin: 5rpx;
text-align: center;
font-size: 24rpx;
}
</style>
以上是组件全部代码,这里没有显示天
接下来在需要的页面引入, 这里我直接复制全部代码了
index.vue
<view class="recommend-item" v-for="(item, index) in recommendList" :key="index">
<image :src="item.cover || errorImage" mode="widthFix"></image>
<view class="goods-title">
{{item.title}}
</view>
<view class="goods-price">
{{item.price}}
</view>
<uni-countdown :backgroundColor="res" :day="item.end_times.d" :hour="item.end_times.h" :minute="item.end_times.m" :second="item.end_times.s"></uni-countdown>
</view>
<script>
import uniCountdown from '@/components/uni-countdown/uni-countdown.vue'
export default {
components: {
uniCountdown
},
data() {
return {
recommendList: [ // 惠多推荐
{
title: "惠多多",
cover: "",
price: "1.00",
end_time: "1604142069000"
},
{
title: "惠多多",
cover: "",
price: "1.00",
end_time: "1604055722000"
},
{
title: "惠多多",
cover: "",
price: "1.00",
end_time: "1604142069000"
},
{
title: "惠多多",
cover: "",
price: "1.00",
end_time: "1604142069000"
}
]
}
},
onLoad() {
this.init()
},
methods: {
init() {
var date = new Date().getTime();
let recommendList = this.recommendList;
recommendList.forEach((item, index) => {
var leftTime = item.end_time - date; //计算两日期之间相差的毫秒数
if (leftTime >= 0) {
let d = Math.floor(leftTime / 1000 / 60 / 60 / 24);
let h = Math.floor(leftTime / 1000 / 60 / 60 % 24);
let m = Math.floor(leftTime / 1000 / 60 % 60);
let s = Math.floor(leftTime / 1000 % 60);
item.end_times = {
d: d,
h: h,
m: m,
s: s
}
}
})
this.recommendList = recommendList
}
}
}
</script>
以上就是所有代码, 我自己的需求,做个记录,分享一下
注: 时间戳计算毫秒
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