实现一个日期组件，如图：
components.js代码如下：
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vue.component('sc-calendar',{
template:'<div class="sccalendar">' +
'<div class="calendar_header">' +
'<div class="prev" @click="prevmonth"> < </div>' +
'<span class="text_year">{{currentyear}}年</span>' +
'<span class="text_month">{{currentmonth}}月</span>' +
'<div class="next" @click="nextmonth"> > </div>' +
'</div>' +
'<div class="calendar_content">' +
'<ul class="week">' +
'<li v-for="item in weeks">{{item}}</li>' +
'</ul>' +
'<ul class="day">' +
'<li v-for="item in daylist" :class="{marginright0:item.marginright0}">{{item.text}}</li>' +
'</ul>' +
'</div>' +
'</div>',
data:function(){
return {
weeks: ['日', '一', '二', '三', '四', '五', '六'],
daylist:[],
currentyear:'',
currentmonth: ''
}
},
created:function(){
var date=new date;
this.currentyear = date.getfullyear();
this.currentmonth = date.getmonth()+1;
this.calday(this.currentyear, this.currentmonth);
},
methods:{
//计算指定月份的天数
calday:function(year,month){
var odate = new date();
//setfullyear(year,month,day) 方法用于设置年份,返回调整过的日期的毫秒表示。
odate.setfullyear(year, month-1,1);
odate.setdate(1);//设置一个月中的第一天
var onow = odate.getday();//当前月的第一天是星期几
var daynum = 0; //指定月份的天数
if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12){
daynum = 31;
}else if(month==4 || month==6 || month==9 || month==11){
daynum = 30;
}else if(month==2&&this.isleayear(year)){
daynum = 29;
}else{
daynum = 28;
}
var sumdaylinum = 0;//总共的格子数
var lastnum = (daynum-(7-onow))%7; //最后剩余的数
lastnum = lastnum == 0?0:7;
sumdaylinum = 7 + parseint((daynum-(7-onow))/7)*7+lastnum;
this.showdaylist(daynum,sumdaylinum,onow);
},
//判断是否是闰年
isleayear:function(year){
if(year%4==0&&year%100!=0){
return true;
}else{
if(year%400==0){
return true;
}else{
return false;
}
}
},
//显示当前日历内容
showdaylist:function(daynum,sumdaylinum,onow){
this.daylist = [];
var rows = parseint(sumdaylinum/7);
var cols = 7;
for(var i=0;i<rows;i++){
for(var j=0;j<cols ;j++){
if(j == cols-1){
this.daylist.push({
text:'',
marginright0:true
})
}else{
this.daylist.push({
text:'',
marginright0:false
})
}
}
}
for(var z=1;z<=daynum;z++){
this.daylist[onow].text = z;
onow++;
}
},
prevmonth:function(){
if( this.currentmonth == 1){
this.currentyear = this.currentyear - 1;
this.currentmonth = 12;
}else{
this.currentmonth = this.currentmonth - 1;
}
this.calday(this.currentyear, this.currentmonth);
},
nextmonth:function(){
if( this.currentmonth == 12){
this.currentyear = this.currentyear + 1;
this.currentmonth = 1;
}else{
this.currentmonth = this.currentmonth + 1;
}
this.calday(this.currentyear, this.currentmonth);
}
}
});
ccal.css代码：
html {
font-family: '微软雅黑';
}
body,
div,
span,
img,
ul,
li,
p {
margin: 0;
padding: 0;
}
ul,
li {
list-style: none;
}
.commonprev {
width: 0.46666667rem;
height: 0.93333333rem;
color: #ffffff;
position: absolute;
display: inline-block;
}
.commonyear {
width: 5.46666667rem;
height: 1.6rem;
font-size: 1rem;
color: #ffffff;
position: absolute;
}
.sccalendar {
width: 25rem;
height: 21.66666667rem;
background: #005498;
background-size: 100%;
}
.sccalendar .calendar_header {
height: 2.93333333rem;
width: 100%;
position: relative;
line-height: 2.93333333rem;
}
.sccalendar .calendar_header .prev {
width: 0.46666667rem;
height: 0.93333333rem;
color: #ffffff;
position: absolute;
display: inline-block;
left: 2.76666667rem;
}
.sccalendar .calendar_header .next {
width: 0.46666667rem;
height: 0.93333333rem;
color: #ffffff;
position: absolute;
display: inline-block;
right: 2.76666667rem;
}
.sccalendar .calendar_header .text_year {
width: 5.46666667rem;
height: 1.6rem;
font-size: 1rem;
color: #ffffff;
position: absolute;
left: 9.76666667rem;
}
.sccalendar .calendar_header .text_month {
width: 5.46666667rem;
height: 1.6rem;
font-size: 1rem;
color: #ffffff;
position: absolute;
left: 13.1rem;
}
.sccalendar .calendar_content {
padding: 0 1rem;
}
.sccalendar .calendar_content li {
width: 2rem;
height: 2rem;
line-height: 2rem;
margin-right: 1.5rem;
text-align: center;
margin-bottom: 0.66666667rem;
float: left;
color: white;
font-size: 0.93333333rem;
}
.sccalendar .calendar_content .week li:nth-of-type(7) {
margin-right: 0;
}
.sccalendar .calendar_content .day .marginright0 {
margin-right: 0;
}
代码：
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
<link rel="stylesheet" href="./ccal.css">
<script>
var pixratio = 1/window.devicepixelratio; //像素比
var html = document.documentelement;
document.write('<meta name="viewport" content="width=device-width,user-scalable=no,initial-scale='+ pixratio +',minimum-scale='+ pixratio +',maximum-scale='+ pixratio +'">');
html.style.fontsize = html.clientwidth/25 + 'px';
</script>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
<script src="./components.js"></script>
</head>
<body>
<div id="app">
<div class="calendar">
<sc-calendar></sc-calendar>
</div>
</div>
</body>
<script>
var vm = new vue({
el:'#app'
})
</script>
</html>
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