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JS實現簡易刻度時鐘範例程式碼，js刻度範例程式碼
，利用JS實現簡易的刻度時鐘；
原理如下：利用60等份的li進行布局，li兩兩之間的間隔為6deg，把基點定在圓心上，使得li圓形分布。然後另外設定三條針線的樣式的位置，基點同樣定在圓心上，然後秒針每秒動6deg，分針每秒動1/60deg，時針每秒動1/3600deg。
布局代碼如下：
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css" id="sty"> *{ margin: 0; padding: 0; list-style: none; } #wrap{ width: 200px; height: 200px; border: 1px solid #000; border-radius: 50%; margin: 20px auto; position: relative; } #wrap ul{ position: relative; } #wrap ul li{ width: 2px; height: 6px; background: #000; position: absolute; left: 99px; top: 0; -moz-transform-origin: center 100px; } #wrap ul li:nth-child(5n){ height: 10px; } #con{ width: 10px; height: 10px; background: #000; border-radius: 50%; position: absolute; left: 95px; top: 95px; } #hour{ width: 5px; height: 70px; background: red; border-radius: 50%; position: absolute; left: 98px; top: 35px; -moz-transform-origin: center 65px; } #min{ width: 3px; height: 85px; background: #000; border-radius: 50%; position: absolute; left: 98.5px; top: 20px; -moz-transform-origin: center 80px; } #sec{ width: 2px; height: 100px; background: gray; border-radius: 50%; position: absolute; left: 98.5px; top: 20px; -moz-transform-origin: center 80px; } </style> </head> <body> <div id="wrap"> <ul id="list"> </ul> <div id="hour"></div> <div id="min"></div> <div id="sec"></div> <div id="con"></div> </div> </body></html>
布局代碼裡需要注意的是：每隔四個刻度就有一個刻度比較長，所以我們在設定樣式的時候要特別注意加上：#wrap ul li:nth-child(5n){height: 10px;}。第5n個的長度變長。
JS代碼中主要搞清楚三針之間的度數關係就好做了，代碼如下：
<script type="text/javascript"> window.onload=function(){ var oWrap=document.getElementById('wrap'); var oList=document.getElementById('list'); var oSty=document.getElementById('sty'); var tump=''; for(var i=0;i<60;i++){ var aLi=document.createElement('li'); oList.appendChild(aLi); tump+='#wrap ul li:nth-child('+(i+1)+'){transform: rotate('+(i+1)*6+'deg);}'; oSty.innerHTML+=tump; } var oSec=document.getElementById('sec'); var oMin=document.getElementById('min'); var oHour=document.getElementById('hour'); function time(){ var date=new Date(); var s=date.getSeconds(); var m=date.getMinutes()+(s/60); var h=date.getHours()+(m/60); oSec.style.transform='rotate('+s*6+'deg)'; oMin.style.transform='rotate('+m*6+'deg)'; oHour.style.transform='rotate('+h*30+'deg)'; } time(); setInterval(time,1000); }</script>
以上就是本文的全部內容，希望對大家的學習有所協助，也希望大家多多支援幫客之家。
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