效果圖:

程式碼：

<template>
   <div id="calender">
                <div id="celender_head">
                    <div id="left" class="celender_head" @click="left()">←</div>
                    <div id="celender_head_inner" class="celender_head"><p >{{header}}</p></div>
                    <div id="right" class="celender_head" @click="right()">→</div>
                </div>
                <div id="calender_body">
                    <table>
                        <tr class='head'>
                            <td v-for="head in heads" >{{head}}</td>
                        </tr>
                         <tr v-for="item in show">
                        <td :class="{now: item1.now, last_month:item1.attr == 'last_month',next_month:item1.attr == 'next_month'}" v-for="item1 in item ">{{item1.num}} </td>
                        </tr>
                    </table>
                </div>
                <div id="calender_foot">
                    <p @click="backToday">回到今天</p>
                </div>
            </div>
</template>

<script>
export default {
created(){
     this.setCalender(new Date())
}, 

  methods:{
      initline:function(){
          this.datas=new Array()
          this.show=new Array();
     
      },
    backToday:function(){
        this.setCalender(new Date())
    },
    getcurrentDates:function (calender_Date) {//傳入正常的Date（）型別資料
        this.initline()
        var months=calender_Date.getMonth();
        months=months+1;
        calender_Date.setMonth(months);
        calender_Date.setDate(0)


        return calender_Date.getDate();
    },
    getlastDates:  function (calenderdDate) {//傳入正常的Date（）型別資料
        var curDate = calenderdDate;
        curDate.setDate(0);
        return curDate.getDate();
    },
    left:function(){
    this.initline()
    var yy=this.currentYear;
    var mm=this.currentMonth;
    var dd=1
    if(yy==new Date().getFullYear()&&mm==new Date().getMonth()+1){
     dd=new Date().getDate();
    }
    if(mm==0){
        mm=12;yy=yy-1;
        this.currentMonth=mm;
        this.currentYear=yy;
    }
    var calenderrDate=yy+"-"+mm+"-"+dd;
    this.setCalender(new Date(calenderrDate));
},
    right:function(){
        this.initline()
    var yy=this.currentYear;
    var mm=this.currentMonth+2;
    var dd=1
    if(yy==new Date().getFullYear()&&mm==new Date().getMonth()+1){
         dd=new Date().getDate();
    }
    if(mm>12){
        mm=1;yy++;
        this.currentMonth=mm;
        this.currentYear=yy;
    }
var calender__Date=yy+"-"+mm+"-"+dd;
this.setCalender(new Date(calender__Date));
},
      setCalender:function(dateNow){
        //顯示日曆部分
        var firstday;
        var today = dateNow;    
        var yy = today.getFullYear();
        this.currentYear=yy;
        var mm = today.getMonth() + 1;//today=2;mm=3
        this.currentMonth=mm-1;//this.curr=2
        var dd = today.getDate();
        this.currentDay=dd;//30
        firstday = yy + "-" + mm + "-1";//2018-3-1
        //本月第一天是星期幾,也表示前面有幾個空的天數
        var firstday_day = new Date(firstday).getDay();
        //日曆頭
        this.header=yy+"年"+mm+"月";
        var cur_days = this.getcurrentDates(today);
        //上一月有多少天
        var last_days = this.getlastDates(dateNow); 
        
        //上個月從哪天開始出現
        var last_first_day = last_days - firstday_day + 1;
        //firstline
        //存上個月的日期
        for (var i = last_first_day; i <= last_days;i++) {
            var date=new Object(); 
            date.num=i;
            date.attr='last_month'
            date.now=false
            this.datas.push(date);
            // this.dateData.firstline.push(date);
        }
        //temp存放換行前上一個資料
        //下一行第一個數字
        var num_second = 7 - firstday_day + 1;
        //存本月日期
        for (var i = 1; i <= cur_days; i++) {
            var date=new Object();
            date.num=i;
            date.attr='this_month'
            if(i == this.currentDay && this.currentMonth == new Date().getMonth()&&this.currentYear==new Date().getFullYear()){
                date.now=true
            }else{
                date.now=false
            }
            this.datas.push(date);
        }
        for(var i=1;i<=42-cur_days-(last_days-last_first_day+1);i++){
            var date=new Object();
            date.num=i;
            date.attr='next_month'
            this.datas.push(date);
        }
        
        var k=0;
        for(var i=0;i<6;i++){
            var line=new Array();
            for(var j=0;j<7;j++){
                line.push(this.datas[k++]);
            }
            this.show.push(line);
        }
       
  }
  },
  data (){
    return {
            body:'',header:'',currentYear:'',currentMonth:'',currentDay:'',
            heads:["日","一","二","三","四","五","六"],
           
            datas:new Array(),
            show:new Array()
        }
    }

}
</script>
<style lang="less">

@red: red;
@gray:rgb(248,248,248);

#calender{
    overflow:auto ;
    position: relative;
    top: 73px;
    left: 939px;
    width: 280px;
    border:2px solid rgb(170, 105, 231);

#celender_head{
    height: 40px;
    width: 280px;
    background-color: blue;

.celender_head{ 
    line-height: 40px;
    text-align: center;
    height: 40px;
}

#left{
    height: 40px;
    width: 40px;
    float: left;
}

#celender_head_inner{
    height: 40px;
    width: 80px;
    float: left;
    margin-left: 60px;
    line-height:20px
}

#right{
    height: 40px;
    width: 40px;
    float: left;
    margin-left: 60px
}

      p{
        color: white;
        font-size: 10px;
        text-align: center;
        }
    }

 #calender_body {
     
    .head td:hover{
    background-color: @gray
    }

    td{
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    border-radius: 50%;
        &:hover{
        background-color: @red;
        }
        &.now {
        color: @red;
        }
        
}
    .last_month {
         color:lightgray;
         &:hover {
              background-color: @gray
                 }
}

    .next_month{
    color:lightgray;
        &:hover {
    background-color: @gray
        }
}
}


#calender_foot{
    background-color: @gray;
    text-align: center;
    line-height:40px;
    p{
    color: blue;
    font-size: 10px;
    }
}
}






</style>