JS+CSS实现动态时钟
(编辑:jimmy 日期: 2024/11/24 浏览:3 次 )
本文实例为大家分享了JS+CSS实现动态时钟的具体代码,供大家参考,具体内容如下
知识点总结:
document.querySelector()方法返回文档中匹配指定 CSS 选择器的一个元素。
setInterval() 方法可按照指定的周期(以毫秒计)来调用函数或计算表达式。
setInterval() 方法会不停地调用函数,直到 clearInterval() 被调用或窗口被关闭。由 setInterval() 返回的 ID 值可用作 clearInterval() 方法的参数。
HTML+js部分
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="shiying.css" > <title>Document</title> </head> <body> <div class="clock"> <div class="hour"> <div class="hr" id="hr"></div> </div> <div class="min"> <div class="mn" id="mn"></div> </div> <div class="sec"> <div class="sc" id="sc"></div> </div> </div> <script type="text/javascript"> const deg = 6; const hr = document.querySelector('#hr'); const mn = document.querySelector('#mn'); const sc = document.querySelector('#sc'); setInterval(() => { let day = new Date(); let hh = day.getHours() * 30; let mm = day.getMinutes() * deg; let ss = day.getSeconds() * deg; hr.style.transform = `rotateZ(${(hh) + (mm / 12)}deg)`; mn.style.transform = `rotateZ(${mm}deg)`; sc.style.transform = `rotateZ(${ss}deg)`; }) </script> </body> </html>
CSS部分
*{ margin:0; padding:0; box-sizing: border-box; } body{ display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #091921; } .clock{ width: 350px; height: 350px; display:flex; justify-content: center; align-items: center; background: url(1613462007944.png); background-size: cover; border:4px solid #091921; border-radius: 50%; box-shadow: 0 -15px 15px rgba(255,255,255,0.05), inset 0 -15px 15px rgba(255,255,255, 0.05), 0 -15px 15px rgba(0,0,0,0.05), inset 0 -15px 15px rgba(0,0,0, 0.05); } .clock:before { content:""; position: absolute; width: 15px; height: 15px; background: #fff; border-radius: 50%; z-index:10000; } .clock .hour, .clock .min, .clock .sec { position: absolute; } .clock .hour, .hr{ width: 160px; height: 160px; } .clock .min, .mn{ width: 190px; height: 190px; } .clock .sec, .sc{ width: 230px; height: 230px; } .hr, .mn, .sc{ display: flex; justify-content: center; position: absolute; border-radius: 50%; } .hr:before{ content:""; position: absolute; width: 8px; height: 80px; background: #ff105e; z-index: 10; border-radius: 6px 6px 0 0; } .mn:before{ content:""; position: absolute; width: 4px; height: 90px; background: #fff; z-index: 11; border-radius: 6px 6px 0 0; } .sc:before{ content:""; position: absolute; width: 4px; height: 150px; background: #fff; z-index:12; border-radius: 6px 6px 0 0; }
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。
下一篇:js动态添加带圆圈序号列表的实例代码