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Vue

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<template>
<view class="u-countdown">
<view class="u-countdown-item" :style="[itemStyle]" v-if="showDays && (hideZeroDay || (!hideZeroDay && d != '00'))">
<view class="u-countdown-time" :style="[letterStyle]">
{{ d }}
</view>
</view>
<view
class="u-countdown-colon"
:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
v-if="showDays && (hideZeroDay || (!hideZeroDay && d != '00'))"
>
{{ separator == 'colon' ? ':' : '天' }}
</view>
<view class="u-countdown-item" :style="[itemStyle]" v-if="showHours">
<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
{{ h }}
</view>
</view>
<view
class="u-countdown-colon"
:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
v-if="showHours"
>
{{ separator == 'colon' ? ':' : '时' }}
</view>
<view class="u-countdown-item" :style="[itemStyle]" v-if="showMinutes">
<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
{{ i }}
</view>
</view>
<view
class="u-countdown-colon"
:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
v-if="showMinutes"
>
{{ separator == 'colon' ? ':' : '分' }}
</view>
<view class="u-countdown-item" :style="[itemStyle]" v-if="showSeconds">
<view class="u-countdown-time" :style="{ fontSize: fontSize + 'rpx', color: color}">
{{ s }}
</view>
</view>
<view
class="u-countdown-colon"
:style="{fontSize: separatorSize + 'rpx', color: separatorColor, paddingBottom: separator == 'colon' ? '4rpx' : 0}"
v-if="showSeconds && separator == 'zh'"
>
</view>
</view>
</template>
<script>
/**
* countDown 倒计时
* @description 该组件一般使用于某个活动的截止时间上,通过数字的变化,给用户明确的时间感受,提示用户进行某一个行为操作。
* @tutorial https://www.uviewui.com/components/countDown.html
* @property {String Number} timestamp 倒计时,单位为秒
* @property {Boolean} autoplay 是否自动开始倒计时如果为false需手动调用开始方法。见官网说明默认true
* @property {String} separator 分隔符colon为英文冒号zh为中文默认colon
* @property {String Number} separator-size 分隔符的字体大小单位rpx默认30
* @property {String} separator-color 分隔符的颜色(默认#303133
* @property {String Number} font-size 倒计时字体大小单位rpx默认30
* @property {Boolean} show-border 是否显示倒计时数字的边框默认false
* @property {Boolean} hide-zero-day 当"天"的部分为0时隐藏该字段 默认true
* @property {String} border-color 数字边框的颜色(默认#303133
* @property {String} bg-color 倒计时数字的背景颜色(默认#ffffff
* @property {String} color 倒计时数字的颜色(默认#303133
* @property {String} height 数字高度值(宽度等同此值)设置边框时看情况是否需要设置此值单位rpx默认auto
* @property {Boolean} show-days 是否显示倒计时的"天"部分默认true
* @property {Boolean} show-hours 是否显示倒计时的"时"部分默认true
* @property {Boolean} show-minutes 是否显示倒计时的"分"部分默认true
* @property {Boolean} show-seconds 是否显示倒计时的"秒"部分默认true
* @event {Function} end 倒计时结束
* @event {Function} change 每秒触发一次,回调为当前剩余的倒计秒数
* @example <u-count-down ref="uCountDown" :timestamp="86400" :autoplay="false"></u-count-down>
*/
export default {
name: 'u-count-down',
props: {
// 倒计时的时间,秒为单位
timestamp: {
type: [Number, String],
default: 0
},
// 是否自动开始倒计时
autoplay: {
type: Boolean,
default: true
},
// 用英文冒号(colon)或者中文(zh)当做分隔符false的时候为中文"11:22"或"11时22秒"
separator: {
type: String,
default: 'colon'
},
// 分隔符的大小单位rpx
separatorSize: {
type: [Number, String],
default: 30
},
// 分隔符颜色
separatorColor: {
type: String,
default: "#303133"
},
// 字体颜色
color: {
type: String,
default: '#303133'
},
// 字体大小单位rpx
fontSize: {
type: [Number, String],
default: 30
},
// 背景颜色
bgColor: {
type: String,
default: '#fff'
},
// 数字框高度单位rpx
height: {
type: [Number, String],
default: 'auto'
},
// 是否显示数字框
showBorder: {
type: Boolean,
default: false
},
// 边框颜色
borderColor: {
type: String,
default: '#303133'
},
// 是否显示秒
showSeconds: {
type: Boolean,
default: true
},
// 是否显示分钟
showMinutes: {
type: Boolean,
default: true
},
// 是否显示小时
showHours: {
type: Boolean,
default: true
},
// 是否显示“天”
showDays: {
type: Boolean,
default: true
},
// 当"天"的部分为0时不显示
hideZeroDay: {
type: Boolean,
default: false
}
},
watch: {
// 监听时间戳的变化
timestamp(newVal, oldVal) {
// 如果倒计时间发生变化,清除定时器,重新开始倒计时
this.clearTimer();
this.start();
}
},
data() {
return {
d: '00', // 天的默认值
h: '00', // 小时的默认值
i: '00', // 分钟的默认值
s: '00', // 秒的默认值
timer: null ,// 定时器
seconds: 0, // 记录不停倒计过程中变化的秒数
};
},
computed: {
// 倒计时item的样式item为分别的时分秒部分的数字
itemStyle() {
let style = {};
if(this.height) {
style.height = this.height + 'rpx';
style.width = this.height + 'rpx';
}
if(this.showBorder) {
style.borderStyle = 'solid';
style.borderColor = this.borderColor;
style.borderWidth = '1px';
}
if(this.bgColor) {
style.backgroundColor = this.bgColor;
}
return style;
},
// 倒计时数字的样式
letterStyle() {
let style = {};
if(this.fontSize) style.fontSize = this.fontSize + 'rpx';
if(this.color) style.color = this.color;
return style;
}
},
mounted() {
// 如果自动倒计时
this.autoplay && this.timestamp && this.start();
},
methods: {
// 倒计时
start() {
// 避免可能出现的倒计时重叠情况
this.clearTimer();
if (this.timestamp <= 0) return;
this.seconds = Number(this.timestamp);
this.formatTime(this.seconds);
this.timer = setInterval(() => {
this.seconds--;
// 发出change事件
this.$emit('change', this.seconds);
if (this.seconds < 0) {
return this.end();
}
this.formatTime(this.seconds);
}, 1000);
},
// 格式化时间
formatTime(seconds) {
// 小于等于0的话结束倒计时
seconds <= 0 && this.end();
let [day, hour, minute, second] = [0, 0, 0, 0];
day = Math.floor(seconds / (60 * 60 * 24));
// 判断是否显示“天”参数,如果不显示,将天部分的值,加入到小时中
// hour为给后面计算秒和分等用的(基于显示天的前提下计算)
hour = Math.floor(seconds / (60 * 60)) - day * 24;
// showHour为需要显示的小时
let showHour = null;
if(this.showDays) {
showHour = hour;
} else {
// 如果不显示天数,将“天”部分的时间折算到小时中去
showHour = Math.floor(seconds / (60 * 60));
}
minute = Math.floor(seconds / 60) - hour * 60 - day * 24 * 60;
second = Math.floor(seconds) - day * 24 * 60 * 60 - hour * 60 * 60 - minute * 60;
// 如果小于10在前面补上一个"0"
showHour = showHour < 10 ? '0' + showHour : showHour;
minute = minute < 10 ? '0' + minute : minute;
second = second < 10 ? '0' + second : second;
day = day < 10 ? '0' + day : day;
this.d = day;
this.h = showHour;
this.i = minute;
this.s = second;
},
// 停止倒计时
end() {
this.clearTimer();
this.$emit('end', {});
},
// 清除定时器
clearTimer() {
if(this.timer) {
// 清除定时器
clearInterval(this.timer);
this.timer = null;
}
}
},
beforeDestroy() {
clearInterval(this.timer);
this.timer = null;
}
};
</script>
<style scoped lang="scss">
@import "../../libs/css/style.components.scss";
.u-countdown {
/* #ifndef APP-NVUE */
display: inline-flex;
/* #endif */
align-items: center;
}
.u-countdown-item {
@include vue-flex;
align-items: center;
justify-content: center;
padding: 2rpx;
border-radius: 6rpx;
white-space: nowrap;
transform: translateZ(0);
}
.u-countdown-time {
margin: 0;
padding: 0;
line-height: 1;
}
.u-countdown-colon {
@include vue-flex;
justify-content: center;
padding: 0 5rpx;
line-height: 1;
align-items: center;
padding-bottom: 4rpx;
}
.u-countdown-scale {
transform: scale(0.9);
transform-origin: center center;
}
</style>