vue实现自定义日期组件功能的实例代码

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);
    }
  }
});

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;
}

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="./ccal.css" rel="external nofollow" >
  <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>