下面我将为您详细讲解“vue.js实现日历插件使用方法详解”的完整攻略,过程中包含两条示例说明。
一、准备工作
首先,在安装vue.js的前提下,我们需要下载日历的核心代码库moment.js和日期相关的处理库date-fns,可以通过npm进行安装:
npm install moment date-fns --save
接着,在Vue组件中,我们需要导入这两个库:
import moment from 'moment';
import { format } from 'date-fns';
二、实现日历组件
接下来,我们需要实现日历组件,这里可以采用Vue中的单文件组件。
在组件中,我们需要定义当前的年月日,并且实现切换月份和显示日历的方法。
<template>
<div>
<h3>{{ year }}年{{ month }}月</h3>
<table>
<thead>
<tr>
<th>日</th>
<th>一</th>
<th>二</th>
<th>三</th>
<th>四</th>
<th>五</th>
<th>六</th>
</tr>
</thead>
<tbody>
<tr v-for="row in rows">
<td v-for="date in row">{{ date }}</td>
</tr>
</tbody>
</table>
</div>
</template>
<script>
import moment from 'moment';
import { startOfMonth, endOfMonth, eachDayOfInterval, format } from 'date-fns';
export default {
name: 'Calendar',
data() {
return {
year: moment().year(),
month: moment().month() + 1,
dates: []
}
},
computed: {
monthRange() {
const start = startOfMonth(moment(`${this.year}-${this.month}-01`));
const end = endOfMonth(moment(`${this.year}-${this.month}-01`));
const days = eachDayOfInterval({
start,
end
});
return days;
},
rows() {
let week = [];
let rows = [];
this.monthRange.forEach((day) => {
const weekday = day.getDay();
if (week.length > 0 && weekday === 0) {
rows.push(week);
week = [];
}
week.push(format(day, 'd'));
});
if (week.length > 0) {
for (let i = week.length; i < 7; i++) {
week.push('');
}
rows.push(week);
}
return rows;
}
},
methods: {
prevMonth() {
const momentObj = moment(`${this.year}-${this.month}-01`).subtract(1, 'months');
this.year = momentObj.year();
this.month = momentObj.month() + 1;
},
nextMonth() {
const momentObj = moment(`${this.year}-${this.month}-01`).add(1, 'months');
this.year = momentObj.year();
this.month = momentObj.month() + 1;
}
}
}
</script>
在这个组件中,我们通过moment.js获取到当前的年月日,在computed中的monthRange方法中,我们调用date-fns的核心方法,计算出当前月份范围,再通过rows方法将日期数据渲染到日历表格中。
三、在页面中引入日历组件
最后,在页面中引入该日历组件,例如:
<template>
<div>
<h2>日历插件</h2>
<calendar></calendar>
</div>
</template>
<script>
import Calendar from '@/components/Calendar';
export default {
name: 'App',
components: {
Calendar
}
}
</script>
四、示例说明
示例1:切换月份
如果需要切换日历的月份,只需要调用prevMonth和nextMonth方法即可,例如:
<template>
<div>
<h2>日历插件</h2>
<button @click="prevMonth">上个月</button>
<button @click="nextMonth">下个月</button>
<calendar></calendar>
</div>
</template>
<script>
import Calendar from '@/components/Calendar';
export default {
name: 'App',
components: {
Calendar
},
methods: {
prevMonth() {
this.$refs.calendar.prevMonth();
},
nextMonth() {
this.$refs.calendar.nextMonth();
}
}
}
</script>
示例2:选中日期
如果需要在日历中选中某个日期,可以为日历增加一个click事件。
在日历组件中,增加一个selectedDate属性,用于表示当前选中的日期;并增加selectDate方法,用于更新selectedDate属性。
<template>
<div>
<h3>{{ year }}年{{ month }}月</h3>
<table>
<thead>
<tr>
<th>日</th>
<th>一</th>
<th>二</th>
<th>三</th>
<th>四</th>
<th>五</th>
<th>六</th>
</tr>
</thead>
<tbody>
<tr v-for="row in rows">
<td v-for="date in row" :class="{ active: isActive(date) }" @click="selectDate(date)">{{ date }}</td>
</tr>
</tbody>
</table>
</div>
</template>
<script>
import moment from 'moment';
import { startOfMonth, endOfMonth, eachDayOfInterval, format, isSameDay } from 'date-fns';
export default {
name: 'Calendar',
data() {
return {
year: moment().year(),
month: moment().month() + 1,
dates: [],
selectedDate: null
}
},
computed: {
monthRange() {
const start = startOfMonth(moment(`${this.year}-${this.month}-01`));
const end = endOfMonth(moment(`${this.year}-${this.month}-01`));
const days = eachDayOfInterval({
start,
end
});
return days;
},
rows() {
let week = [];
let rows = [];
this.monthRange.forEach((day) => {
const weekday = day.getDay();
if (week.length > 0 && weekday === 0) {
rows.push(week);
week = [];
}
week.push(format(day, 'd'));
});
if (week.length > 0) {
for (let i = week.length; i < 7; i++) {
week.push('');
}
rows.push(week);
}
return rows;
}
},
methods: {
prevMonth() {
const momentObj = moment(`${this.year}-${this.month}-01`).subtract(1, 'months');
this.year = momentObj.year();
this.month = momentObj.month() + 1;
},
nextMonth() {
const momentObj = moment(`${this.year}-${this.month}-01`).add(1, 'months');
this.year = momentObj.year();
this.month = momentObj.month() + 1;
},
isActive(date) {
return isSameDay(date, this.selectedDate);
},
selectDate(date) {
this.selectedDate = date;
}
}
}
</script>
同时,在页面中调用日历组件时,也需要增加一个click事件:
<template>
<div>
<h2>日历插件</h2>
<p v-if="selectedDate">{{ selectedDate }}</p>
<calendar @click="selectDate"></calendar>
</div>
</template>
<script>
import Calendar from '@/components/Calendar';
export default {
name: 'App',
components: {
Calendar
},
data() {
return {
selectedDate: null
}
},
methods: {
selectDate(date) {
this.selectedDate = date;
}
}
}
</script>
这样,就可以在日历中选中某个日期,然后在页面中显示选中的日期了。
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