vue实现简单的日历效果

<div id="dateContainer">   <div class="date__showNowTime">    今天是 <span v-text="ynow"></span>年<span v-text="mnow+1"></span>月<span v-text="dnow"></span>日   </div>   <div class="nowTime">    <button class="preMon" @click="preMon">上个月</button>    <div class="thisMon">      <span v-text="ynow"></span>/     <span v-text="mnow+1"></span>    </div>    <button class="nextMon" @click="nextMon">下个月</button>   </div>   <table border="1" id="table">    </table> </div>

export default {  data() {   return {    newDate: '',//当前的日期的信息    ynow: '',//当前的年数    mnow: '',//当前的月份    dnow: '',//当前的天数    firstDay: '',//第一天    firstnow: '',//当前的星期    m_days: [],//每个月的天数    tr_str: '',//行数   }  },  methods: {   getDaysInfo() {    var _this = this;    this.sureDate(_this);   },   is_leap(year) {//判断是不是闰年    return (year%100==0?(year%400==0?1:0):(year%4==0?1:0));   },   //下面的是画表格的方法，这个方法会根据数据画出我们需要的表格   drawTable(jsonHtml) {    var _this = this;    var str = `    <tr class="xiqi">     <td class="isRed">星期日</td>     <td>星期一</td>     <td>星期二</td>     <td>星期三</td>     <td>星期四</td>     <td>星期五</td>     <td class="isRed">星期六</td>    </tr>`;    var idx = '',date_str = '',isRed = '',hasMsg='';    for(var i = 0; i< _this.tr_str; i++) {     str+='<tr>';     for(var k = 0; k < 7; k++) {        idx = i*7+k;       isRed = (k===0||k===6)?"isRed":"";       date_str=idx-_this.firstnow+1;      (date_str<=0 || date_str>this.m_days[this.mnow]) ? date_str=" " : date_str=idx-_this.firstnow+1;      date_str==_this.dnow?hasMsg='<td class="thisDay" date="'+date_str +'"><span class="'+isRed +'">'+date_str+'</span></td>':hasMsg='<td date="'+date_str +'"><span class="'+isRed +'">'+date_str+'</span></td>';       for(var l = 0, len = jsonHtml.length; l < len; l++) {      if(date_str== jsonHtml[l].date) {       var newStr = '<p>'+jsonHtml[l].msg +'</p>';       date_str==_this.dnow?hasMsg='<td class="thisDay" date="'+date_str +'"><span class="'+isRed +'">'+date_str+'</span>'+ newStr+'</td>':hasMsg='<td date="'+date_str +'"><span class="'+isRed +'">'+date_str+'</span>'+ newStr+'</td>';       }      }      str+=hasMsg;      }     str+='</tr>';    }    var table = document.getElementById('table');    table.innerHTML = str;   },   //两个参数代表的含义分别是this对象以及判断当前的操作是不是在进行月份的修改   sureDate(_this,other) {    this.newDate = new Date();    this.ynow = this.newDate.getFullYear();    if(!other) {     this.mnow=this.newDate.getMonth(); //月份    }    this.dnow=this.newDate.getDate(); //今日日期    this.firstDay = new Date(this.ynow,this.mnow,1);    this.firstnow=this.firstDay.getDay();    this.m_days = [31,28+this.is_leap(this.ynow),31,30,31,30,31,31,30,31,30,31];    this.tr_str = Math.ceil((_this.m_days[this.mnow] + this.firstnow)/7);    this.showMsg();   },   preMon() {    var _this = this;    this.mnow--;    this.sureDate(_this,"up");   },   nextMon() {    var _this = this;    this.mnow++;    this.sureDate(_this,"next");   },   //通过接口返回的是我们当前的月份对应在日历中需要处理的事项   showMsg() {    var jsonHtml = [{     date: 2,     msg: '吃饭'    },    {     date: 3,     msg: '睡觉'    },    {     date: 4,     msg: '打豆豆'    },    {     date: 6,     msg: '豆豆不在家'    },    {     date: 12,     msg: '~~~~~'    },    {     date: 15,     msg: '怎么办~~~~'    },    {     date: 20,     msg: '找豆豆'    }];    this.drawTable(jsonHtml)   }   },  mounted() {   //画出当前的月份的天数对应的表格   this.getDaysInfo();   //进行数据的获取，显示到对应的位置  }