(编辑:jimmy 日期: 2024/10/30 浏览:2)
本文实例为大家分享了js+css实现在线时钟的具体代码,供大家参考,具体内容如下
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>时钟</title> <style type="text/css"> *{ padding: 0; margin: 0; } .wrap{ position: absolute; width: 200px; height: 200px; border: 2px solid; background-color: pink; border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%,-50%); } .wrap>ul{ list-style: none; } .wrap>ul>li{ position: absolute; left: 99px; top: 0; width: 2px; height: 10px; background-color: black; transform-origin: center 100px; } .wrap>ul>li:nth-child(5n+1){ height: 15px; } .wrap > .hour{ position: absolute; left: 97px; top:70px ; width: 6px; height: 30px; background: black; transform-origin: center bottom; } .wrap > .min{ position: absolute; left: 98px; top: 50px; width: 4px; height: 50px; background: gray; transform-origin: center bottom; } .wrap > .sec{ position: absolute; left: 99px; top: 30px; width: 2px; height: 70px; background: red; transform-origin: center bottom; } .wrap > .center{ position: absolute; left: 90px; top: 90px; width: 20px; height: 20px; border-radius:50% ; background: black; } </style> </head> <body> <div class="wrap"> <ul></ul> <div class="hour"></div> <div class="min"></div> <div class="sec"></div> <div class="center"></div> </div> </body> <script type="text/javascript"> window.onload =function(){ var hourNode =document.querySelector(".wrap > .hour"); var minNode =document.querySelector(".wrap > .min"); var secNode =document.querySelector(".wrap > .sec"); var ulNode =document.querySelector(".wrap>ul"); var styleNode =document.createElement('style'); var liHtml =''; var styleHtml =''; for(var i=0;i<60;i++){ liHtml += "<li></li>"; styleHtml+=".wrap>ul>li:nth-child("+(i+1)+"){transform: rotate("+(i*6)+"deg);}" } ulNode.innerHTML =liHtml; styleNode.innerHTML =styleHtml; document.querySelector('head').appendChild(styleNode); moveTime(); setInterval(moveTime,1000); function moveTime(){ var date =new Date(); var sec =date.getSeconds(); var min =date.getMinutes()+sec/60; var hour =date.getHours()+min/60; hourNode.style.transform ="rotate("+(hour*30)+"deg)"; minNode.style.transform ="rotate("+(min*6)+"deg)"; secNode.style.transform ="rotate("+(sec*6)+"deg)"; } } </script> </html>
实现要点
1、transform-origin的基本点的应用
2、批量处理html和样式的信息
3、指证位置进行了优化(时针与小时和分针位置有关,分针与分和秒针位置有关)。
新增居中方式:
开启绝对定位 left:50%;top :50%;transform:translate(50%,50%);
更多JavaScript时钟特效点击查看:JavaScript时钟特效专题
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。