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【js组件】date日期显示。

2022-07-06 23:26:00 【KatyLight】

 日期组件，会随着时间变化。实现代码：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    body{
      background-color: black;
      color: white;
    }

    .KatyLightTimeBox{
      color: #00ff95;
      font-size: 2rem;
      font-weight: bolder;
    }
    .KatyLightTimeBox>.time{
      margin-left: 1rem;
    }
  </style>
  <script>
    class KatyLightTimeBox{
      constructor(params) {
        this.target=params.target;
        let date=new Date();
        let year=date.getFullYear();
        let mouth=date.getMonth()+1;
        let d=date.getDate();
        let h=date.getHours();
        let m=date.getMinutes();
        let s=date.getSeconds();
        this.timeSpan=this.target.querySelector('.time')

        this.dateSpan=this.target.querySelector('.date')

        this.data=[
          year,mouth,d,h,m,s
        ]
        this.dateSpan.innerText=this.dateFormat();
         this.run()
       }
      run(){
        setInterval(()=>{
          let cc=false;
          this.data[5]++;
          if(this.data[5]>=60){
            this.data[5]=0;
            this.data[4]++
          }
          if(this.data[4]>=60){
            this.data[4]=0;
            this.data[3]++
          }
          if(this.data[3]>=24){
            this.data[3]=0;
            this.data[2]++
            cc=true;
          }
          this.timeSpan.innerText=this.timeFormat();
          if(!cc){
            return;
          }
          let max=30;
          if(this.data[1]<8){
            if(this.data[1]%2===0){
              if(this.data[1]===2){
                if(this.data[0]%400===0||(this.data[0]%4===0&&this.data[0]%100!==0)){
                  max=29
                }else{
                  max=28
                }
              }else{
                max=30
              }
            }else{
              max=31
            }
          }else{
            if(this.data[1]%2===0){
              max=31
            }else{
              max=30
            }
          }
          if(this.data[2]>max){
            this.data[2]=0;
            this.data[1]++;
          }
          if(this.data[1]>12){
            this.data[1]=1;
            this.data[0]++;
          }
          this.dateSpan.innerText=this.dateFormat();
        },1000)
      }
      dateFormat(){
        let s=this.data[0].toString();

        let m=this.data[1].toString();
        if(m.length<2){
          m="0"+m;
        }
        let h=this.data[2].toString();
        if(h.length<2){
          h="0"+h;
        }
        return h+"."+m+"."+s
      }
      timeFormat(){
        let s=this.data[5].toString();
        if(s.length<2){
          s="0"+s;
        }
        let m=this.data[4].toString();
        if(m.length<2){
          m="0"+m;
        }
        let h=this.data[3].toString();
        if(h.length<2){
          h="0"+h;
        }
        return h+":"+m+":"+s
      }
    }
window.onload=()=>{
  new KatyLightTimeBox({
    target:document.querySelector('.KatyLightTimeBox')
  })
}
  </script>
</head>
<body>
<div class="KatyLightTimeBox"><span class="date">2012.12.21</span><span class="time">12:00:00</span></div>
</body>
</html>

原网站

版权声明
本文为[KatyLight]所创，转载请带上原文链接，感谢
https://blog.csdn.net/qq_33014695/article/details/125641464

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