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本篇文章主要介绍了vue 计时器组件的实现代码，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
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脚本之家。 | 
发表于 2017-9-14 16:50:35
