Javascript 使用Vue递增格式化计时器

Javascript 使用Vue递增格式化计时器,javascript,vue.js,vuejs2,vue-component,Javascript,Vue.js,Vuejs2,Vue Component,我正在构建一个基本的计时器Vue组件。计时器以秒为单位递增,用户可以在单击时播放和暂停计时器。以下是组件: <template> <div v-bind:class="{workspaceTimer: isRunning}"> <a class="u-link-white" href="#" @click="toggleTimer"> {{ time }} <span v-if="i

我正在构建一个基本的计时器Vue组件。计时器以秒为单位递增,用户可以在单击时播放和暂停计时器。以下是组件:

<template>
    <div v-bind:class="{workspaceTimer: isRunning}">
        <a class="u-link-white" href="#" @click="toggleTimer">
            {{ time }}
            <span v-if="isRunning">
                Pause
            </span>
            <span v-else>
                Play
            </span>
        </a>
    </div>
</template>

<script>
    export default {
        props: ['order'],
        data() {
            return {
                time: this.order.time_to_complete,
                isRunning: false,
                interval: null,
            }
        },
        watch: {
            time: function (newTime) {
                this.saveTime()
            }
        },
        methods: {
            toggleTimer() {
                if (this.isRunning) {
                    clearInterval(this.interval);
                } else {
                    this.interval = setInterval(this.incrementTime, 1000);
                }
                this.isRunning = !this.isRunning;
            },
            incrementTime() {
                this.time = parseInt(this.time) + 1;
            },
            formattedTime() {
                var sec_integer = parseInt(this.time, 10);
                var hours   = Math.floor(sec_integer / 3600);
                var minutes = Math.floor((sec_integer - (hours * 3600)) / 60);
                var seconds = sec_integer - (hours * 3600) - (minutes * 60);

                if (minutes < 10) {minutes = "0"+minutes;}
                if (seconds < 10) {seconds = "0"+seconds;}
                this.time = +minutes+':'+seconds;
            },
            saveTime: _.debounce(
                function () {
                    var self = this;
                    axios.put(location.pathname, {time_to_complete: self.time})
                    .then(function (response) {
                        console.log('timer: ' + response.data.time_to_complete);
                    })
                    .catch(function (error) {
                        console.log('Error: ' + error);
                    })
                },
                1000
            )

    }
</script>
filters: {
    formattedTime: function (value) {
        var sec_num = parseInt(value, 10);
        var hours   = Math.floor(sec_num / 3600);
        var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
        var seconds = sec_num - (hours * 3600) - (minutes * 60);

        //if (hours   < 10) {hours   = "0"+hours;}
        if (minutes < 10) {minutes = "0"+minutes;}
        if (seconds < 10) {seconds = "0"+seconds;}
        return +minutes+':'+seconds;
    }
},

导出默认值{
道具:[“订单”],
数据(){
返回{
时间:此。订单。完成时间,
isRunning:false,
间隔:空,
}
},
观察:{
时间:函数(newTime){
这是saveTime()
}
},
方法:{
切换计时器(){
如果(此.isRunning){
clearInterval(这个.interval);
}否则{
this.interval=setInterval(this.incrementTime,1000);
}
this.isRunning=!this.isRunning;
},
递增时间(){
this.time=parseInt(this.time)+1;
},
格式化时间(){
var sec_integer=parseInt(这个时间为10);
var小时=数学下限(秒整数/3600);
var分钟=数学楼层((秒整数-(小时*3600))/60);
var秒=秒整数-(小时*3600)-(分钟*60);
如果(分钟<10){minutes=“0”+分钟;}
如果(秒<10){seconds=“0”+秒;}
this.time=+分钟+':'+秒;
},
保存时间:u.debounce(
函数(){
var self=这个;
put(location.pathname,{time\u to\u complete:self.time})
.然后(功能(响应){
console.log('timer:'+response.data.time_to_complete');
})
.catch(函数(错误){
console.log('错误:'+错误);
})
},
1000
)
}
我将第二个计数写成一个整数,但希望将第二个计数显示为mm:ss,并将该值的增量格式化,例如,从00:59递增到1:00


我可以使用方法或计算属性轻松格式化第二个值(请参见该示例中的
formattedTime()
方法),但我不确定如何递增该字符串,然后格式化递增的字符串。是否需要监视该字符串的更改,然后格式化更新的字符串?

解决了这个问题。答案实际上是在我的组件中使用本地筛选器:

<template>
    <div v-bind:class="{workspaceTimer: isRunning}">
        <a class="u-link-white" href="#" @click="toggleTimer">
            {{ time }}
            <span v-if="isRunning">
                Pause
            </span>
            <span v-else>
                Play
            </span>
        </a>
    </div>
</template>

<script>
    export default {
        props: ['order'],
        data() {
            return {
                time: this.order.time_to_complete,
                isRunning: false,
                interval: null,
            }
        },
        watch: {
            time: function (newTime) {
                this.saveTime()
            }
        },
        methods: {
            toggleTimer() {
                if (this.isRunning) {
                    clearInterval(this.interval);
                } else {
                    this.interval = setInterval(this.incrementTime, 1000);
                }
                this.isRunning = !this.isRunning;
            },
            incrementTime() {
                this.time = parseInt(this.time) + 1;
            },
            formattedTime() {
                var sec_integer = parseInt(this.time, 10);
                var hours   = Math.floor(sec_integer / 3600);
                var minutes = Math.floor((sec_integer - (hours * 3600)) / 60);
                var seconds = sec_integer - (hours * 3600) - (minutes * 60);

                if (minutes < 10) {minutes = "0"+minutes;}
                if (seconds < 10) {seconds = "0"+seconds;}
                this.time = +minutes+':'+seconds;
            },
            saveTime: _.debounce(
                function () {
                    var self = this;
                    axios.put(location.pathname, {time_to_complete: self.time})
                    .then(function (response) {
                        console.log('timer: ' + response.data.time_to_complete);
                    })
                    .catch(function (error) {
                        console.log('Error: ' + error);
                    })
                },
                1000
            )

    }
</script>
filters: {
    formattedTime: function (value) {
        var sec_num = parseInt(value, 10);
        var hours   = Math.floor(sec_num / 3600);
        var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
        var seconds = sec_num - (hours * 3600) - (minutes * 60);

        //if (hours   < 10) {hours   = "0"+hours;}
        if (minutes < 10) {minutes = "0"+minutes;}
        if (seconds < 10) {seconds = "0"+seconds;}
        return +minutes+':'+seconds;
    }
},
过滤器:{
formattedTime:函数(值){
var secu_num=parseInt(值,10);
var小时=数学楼层(秒数/3600);
var分钟=数学楼层((秒数-(小时*3600))/60);
var秒=秒数-(小时*3600)-(分钟*60);
//如果(小时<10){hours=“0”+小时;}
如果(分钟<10){minutes=“0”+分钟;}
如果(秒<10){seconds=“0”+秒;}
返回+分钟+':'+秒;
}
},

然后将该筛选器应用于我的时间变量:
{{time | formattedTime}

time
应为整数,以秒为单位计数。
formattedTime
应为整数