最近需要一个日历,当前能用的现成的组件库也有日历组件,但因为不满足需求,所以决定自己搞一个。
最终效果:
实现的功能:上个月、当月、下个月和回到今天切换功能。
对应的html部分
<div class="plan-zone">
<div class="btn-group">
<div class="left-btn">
<el-button-group>
<el-button @click="prevMonth" type="primary"
>上一个月</el-button
>
<el-button type="primary" @click="goToCurrentMonth">{{
getCurDate()
}}</el-button>
<el-button @click="nextMonth" type="primary"
>下一个月</el-button
>
</el-button-group>
<el-button type="primary" @click="goToCurrentDay"
>回到今天</el-button
>
</div>
<div class="right-btn">
<button class="new">新安排</button>
<button class="ing">进行中</button>
<button class="finish">已完成</button>
</div>
</div>
<!-- <el-calendar v-model="value"> </el-calendar> -->
<table class="parent-table">
<thead>
<th>周一</th>
<th>周二</th>
<th>周三</th>
<th>周四</th>
<th>周五</th>
<th>周六</th>
<th>周日</th>
</thead>
<tbody>
<tr v-for="(week, windex) in weeks" :key="windex">
<td
v-for="(day, dindex) in week"
:class="{ highlight: isToday(day.date) }"
:key="dindex"
>
<div
class="content"
:class="{
faded: !isCurrentMonth(day.date),
}"
>
<div class="top-day">{{ day.date.getDate() }}日</div>
<div class="middle-event"></div>
<div class="bottom-event"></div>
</div>
</td>
</tr>
</tbody>
</table>
</div>
对应scss部分
.faded {
opacity: 0.3;
}
.highlight {
background: rgba(255, 220, 40, 0.15);
}
.plan-zone {
margin-top: 10px;
.btn-group {
display: flex;
justify-content: space-between;
.right-btn {
button.new {
background-color: #fff;
border: 1px solid #fff;
color: #409eef;
position: relative;
&::before {
content: "";
width: 8px;
height: 8px;
border-radius: 50%;
position: absolute;
top: 7px;
left: -3px;
background-color: #409eef;
}
}
button.ing {
background-color: #fff;
border: 1px solid #fff;
color: #ff974a;
position: relative;
&::before {
content: "";
width: 8px;
height: 8px;
border-radius: 50%;
position: absolute;
top: 7px;
left: -3px;
background-color: #ff974a;
}
}
button.finish {
background-color: #fff;
border: 1px solid #fff;
color: #3dd599;
position: relative;
&::before {
content: "";
width: 8px;
height: 8px;
border-radius: 50%;
position: absolute;
top: 7px;
left: -3px;
background-color: #3dd599;
}
}
}
}
}
.parent-table {
border-collapse: collapse;
table-layout: fixed;
width: 100%;
margin-top: 20px;
th,
td {
width: 14.4%;
border: 1px solid #ddd;
}
td {
padding: 2px 3px;
.content {
position: relative;
min-height: 80px;
}
vertical-align: top;
.top-day {
text-align: right;
font-size: 13px;
}
}
}
.table-date {
display: flex;
> div {
flex: 1;
}
}
对应的JavaScript部分
export default {
data() {
return {
current: new Date(),
today: new Date(),
};
},
computed: {
weeks() {
return this.getMonthData(
this.current.getFullYear(),
this.current.getMonth() + 1
);
},
},
methods: {
getCurDate() {
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth() + 1; // getMonth() returns a zero-based value (0-11)
if (month < 10) {
month = "0" + month; // add a leading zero if the month is a single digit
}
return year + "-" + month;
},
isToday(date) {
let today = new Date();
return (
date.getDate() === today.getDate() &&
date.getMonth() === today.getMonth() &&
date.getFullYear() === today.getFullYear()
);
},
goToCurrentDay() {
this.current = new Date(this.today);
},
isCurrentMonth(date) {
return date.getMonth() === this.current.getMonth();
},
prevMonth() {
this.current.setMonth(this.current.getMonth() - 1);
this.current = new Date(this.current);
// console.log(this.current.getFullYear(), 'dedede')
},
nextMonth() {
this.current.setMonth(this.current.getMonth() + 1);
this.current = new Date(this.current);
},
goToCurrentMonth() {
this.current = new Date(this.today);
},
getMonthData(year, month) {
let weeks = [];
let firstDay = new Date(year, month - 1, 1); // 这个月的第一天
let lastDayOfCurrentMonth = new Date(year, month, 0); // 这个月的最后一天
let lastDayOfPrevMonth = new Date(year, month - 1, 0); // 上个月的最后一天
//这里的0有一个特殊的意义,它可以返回上个月的最后一天。也就是说,如果你想知道某个月有多少天,你可以创建一个日期对象,年份和月份设置为你想知道的月份,日期设置为0,然后调用getDate()方法,返回的就是那个月的天数。
// new Date(year, month - 1, 0) 最后一个参数,超过当月天数重新排序,比如1月31天,最后一个参数为33返回2
let startDayOfWeek = firstDay.getDay() === 0 ? 7 : firstDay.getDay(); // 开始是周几
let dayCount = 1; // 当前日期的变量,初始值为1
// 上一个月的天数
let prevMonthDayCount = lastDayOfPrevMonth.getDate() - startDayOfWeek + 2; // 这是为了在日历中填充上个月的日期。
// console.log(lastDayOfPrevMonth.getDate(), startDayOfWeek, prevMonthDayCount)
for (let i = 0; i < 6; i++) {
let week = [];
for (let j = 0; j < 7; j++) {
// 日期为上个月的日期,然后将这个日期对象添加到`week`数组中,同时`prevMonthDayCount`加1。
if (i === 0 && j < startDayOfWeek - 1) {
week.push({ date: new Date(year, month - 2, prevMonthDayCount++) });
// 日期为下个月的日期,然后将这个日期对象添加到`week`数组中,同时`dayCount`加1
} else if (dayCount > lastDayOfCurrentMonth.getDate()) {
week.push({
date: new Date(
year,
month,
dayCount++ - lastDayOfCurrentMonth.getDate()
),
});
// 日期为这个月的日期,然后将这个日期对象添加到`week`数组中,同时`dayCount`加1
} else {
week.push({ date: new Date(year, month - 1, dayCount++) });
}
}
weeks.push(week);
}
return weeks;
}
},
};
关键是上面的getMonthData
方法。理解这个方法就理解了这个组件。
(本文完)
原文链接:https://juejin.cn/post/7327305284853465122 作者:通往自由之路