本文實(shí)例講述了JS+CSS3實(shí)現(xiàn)的簡(jiǎn)易鐘表效果。分享給大家供大家參考,具體如下:
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title>m.survivalescaperooms.com js+css3簡(jiǎn)易鐘表</title> <style type="text/css"> *{ margin: 0; padding: 0; } #wrap{ width: 300px; height: 300px; background-color: aliceblue; margin: 200px auto; position: relative; box-sizing: border-box; } #wrap > div{ position: absolute; top: 50%; left: 50%; } #hour{ width: 6px; height: 60px; background-color: #000000; margin: -60px -3px; transform-origin: 3px 60px; } #min{ width: 4px; height: 80px; background-color: #000000; margin: -80px -2px; transform-origin: 2px 80px; } #sec{ width: 2px; height: 100px; background-color: red; margin: -100px -1px; transform-origin: 1px 100px; } #point{ width: 20px; height: 20px; background-color: burlywood; margin: -10px -10px; border-radius: 50%; } #circle{ width: 300px; height: 300px; position: relative; } #circle li{ list-style: none; width: 2px; height: 6px; background-color: #000000; position: absolute; transform-origin: 1px 150px; left: 149px; top: 0px; } </style> </head> <body> <div id="wrap"> <div id="hour"></div> <div id="min"></div> <div id="sec"></div> <div id="point"></div> <ul id="circle"></ul> </div> </body> <script type="text/javascript"> var hourDom=document.getElementById('hour'); var minDom=document.getElementById('min'); var secDom=document.getElementById('sec'); var cricle=document.getElementById('circle'); //創(chuàng)建表盤,ul寬高為wrap寬高,以wrap中心點(diǎn)為變換基點(diǎn),動(dòng)態(tài)分配6°的li for (var i=0;i<60;i++) { var li=document.createElement('li'); cricle.appendChild(li); li.style.transform='rotate('+i*6+'deg)'; } //延時(shí)函數(shù),確保每一秒更新一次最新時(shí)間。并且計(jì)算時(shí)間準(zhǔn)確值。 setInterval(function(){ var date=new Date(); var hour=date.getHours(); var min=date.getMinutes(); var sec=date.getSeconds(); min+=sec/60; hour+=min/60; //當(dāng)前時(shí)間*每個(gè)單位時(shí)間走的角度=指針指向 hourDom.style.transform='rotate('+hour*30+'deg)'; minDom.style.transform='rotate('+min*6+'deg)'; secDom.style.transform='rotate('+sec*6+'deg)'; },1000) </script></html>運(yùn)行效果:
希望本文所述對(duì)大家JavaScript程序設(shè)計(jì)有所幫助。
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