vue 计时器组件的实现代码
程序员文章站
2022-09-08 12:56:19
整理文档，搜刮出一个vue 计时器组件的代码，稍微整理精简一下做下分享。
整理文档，搜刮出一个vue 计时器组件的代码，稍微整理精简一下做下分享。
<template>
<div>
<span
:sendsync="sendsync"
:autostart="autostart"
:defaultval="defaultval"
>{{countstring}}</span>
</div>
</template>
<script>
export default {
data() {
return {
isstart: false,
globaltimer: null,//获取setinterval对象值
countstring: '0秒', //用来显示时间
day: 0,
hour: 0,
minute: 0,
second: 0,
millisecond: 0,
countval: this.defaultval, //获取初始值
pausetime: 0,
}
},
watch: {
'countstring': {
deep: true,
handler: function(val, oldval) {
var vm = this
if (vm.needsendsunc) {
vm.passtoparent(val)
}
}
},
'needsendsunc': {
deep: true,
handler: function(val) {
var vm = this
if (val) {
vm.passtoparent(vm.countstring)
}
}
}
},
props: {
sendsync: {
type: boolean,
default: false,
},
autostart: {
type: boolean,
default: false,
},
defaultval: {
type: number,
default: 0,
}
},
mounted() {
var vm = this
if (vm.autostart) {
vm.startcountfn()
}
},
computed: {
needsendsunc: function() {
return this.sendsync
}
},
created: function() {
this.$on('startcount', function() {
this.startcountfn()
});
this.$on('stopcount', function() {
this.stopcountfn()
});
},
components: {},
methods: {
counterfn: function(countertime) {
var vm = this
var nowdate = new date().gettime()
if(vm.pausetime == 0){
var num = nowdate - countertime //计算时间毫秒差
}else{
vm.pausetime = vm.pausetime +10
var num = vm.pausetime - countertime //计算时间毫秒差
}
var leave1 = num % (24 * 3600 * 1000) //计算天数后剩余的毫秒数
var leave2 = leave1 % (3600 * 1000) //计算小时数后剩余的毫秒数
var leave3 = leave2 % (60 * 1000) //计算分钟数后剩余的毫秒数
vm.day = math.floor(num / (24 * 3600 * 1000)) //计算相差天数
vm.hour = math.floor(leave1 / (3600 * 1000))//计算相差小时
vm.minute = math.floor(leave2 / (60 * 1000))//计算相差分钟
vm.second = math.round(leave3 / 1000) //计算相差秒
if (vm.day > 0) {
vm.countstring = `${vm.day}天 ${vm.hour}小时 ${vm.minute}分 ${vm.second}秒`;
} else if (vm.hour > 0) {
vm.countstring = `${vm.hour}小时 ${vm.minute}分 ${vm.second}秒`;
} else if (vm.minute > 0) {
vm.countstring = `${vm.minute}分 ${vm.second}秒`;
} else {
vm.countstring = `${vm.second}秒`;
}
},
startcountfn: function() {
var vm = this
if (!vm.isstart) {
vm.countval = vm.countval ? vm.countval : new date().gettime()
var timer = setinterval(function() {
vm.counterfn(vm.countval)
}, 10)
vm.globaltimer = timer
vm.isstart = true
}
},
stopcountfn: function() {
var vm = this
if (vm.isstart) {
window.clearinterval(vm.globaltimer)
vm.globaltimer = null;
vm.isstart = false
vm.pausetime = new date().gettime()
}
},
passtoparent: function(data) {
var vm = this
this.$emit("getdatafromchild", data)
},
}
}
</script>
<style>
</style>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
下一篇： 微信小程序之页面拦截器的示例代码