時鐘.html

最後更新：2016-09-26 來源：互聯網

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<!DOCTYPE html>
<html charset="utf-8">
<head>
<title>時鐘</title>
<style>
body{background:#42426F;}
#c1{background:white;}
span{color:white;}
</style>
<script>
window.onload = function(){
var oC = document.getElementById(‘c1‘);
var oGC = oC.getContext(‘2d‘);
function toDraw(){
var x = 200;
var y = 200;
var r = 150;

oGC.clearRect(0,0,oC.width,oC.height);
//擷取時間
var oDate = new Date();
var oHours = oDate.getHours();
var oMin = oDate.getMinutes();
var oSen = oDate.getSeconds();

var oHoursValue = (-90 + oHours*30 + oMin/2) * Math.PI/180;
var oMinValue = (-90 + oMin*6) * Math.PI/180;
var oSenValue = (-90 + oSen*6) * Math.PI/180;
var osen2Value = oSenValue+Math.PI;

oGC.beginPath();
for(var i = 0; i < 60; i++){
oGC.moveTo(x,y);
oGC.arc(x,y,r,6*i*Math.PI/180,6*(i+1)*Math.PI/180,false);

}
oGC.closePath();
oGC.stroke();

oGC.fillStyle = ‘white‘;
oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*19/20,0,360*(i+1)*Math.PI/180,false);
oGC.closePath();
oGC.fill();

oGC.lineWidth=3;
oGC.beginPath();
for(var i = 0; i < 12; i++){
oGC.moveTo(x,y);
oGC.arc(x,y,r,30*i*Math.PI/180,30*(i+1)*Math.PI/180,false);

}
oGC.closePath();
oGC.stroke();

oGC.fillStyle = ‘white‘;
oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*18/20,0,360*(i+1)*Math.PI/180,false);
oGC.closePath();
oGC.fill();
//時針
oGC.lineWidth = 5;

oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*10/20,oHoursValue,oHoursValue,false);
oGC.closePath();
oGC.stroke();
//分針
oGC.lineWidth = 3;
oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*15/20,oMinValue,oMinValue,false);
oGC.closePath();
oGC.stroke();
//秒針
oGC.lineWidth = 1;
oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*17/20,oSenValue,oSenValue,false);
oGC.closePath();
oGC.stroke();
oGC.lineWidth = 1;
oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*5/20,osen2Value,osen2Value,false);
oGC.closePath();
oGC.stroke();

oGC.beginPath();
oGC.moveTo(x,y);
oGC.arc(x,y,r*1/20,0,2*Math.PI,false);
oGC.fillStyle=‘black‘;
oGC.closePath();
oGC.fill();

}
setInterval(toDraw,1000);
toDraw();
};
</script>
</head>
<body>
<canvas id="c1" width="500" height="500">
<span>不支援canvas瀏覽器</span>
</canvas>
</body>
</html>

時鐘.html

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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