前端domo实现_钟表
<!doctype html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<canvas id="canvas" width="500" height="500" >
您的浏览器不支持canvas标签，无法看到时钟
</canvas>
<script>
var canvas=document.getElementById("canvas");
var cxt=canvas.getContext("2d");
function drawClock(){
cxt.clearRect(0,0,500,500);
var now=new Date();
var sec=now.getSeconds();
var min=now.getMinutes();
var hour=now.getHours();
hour=hour+min/60;
hour=hour>12?hour-12:hour;
cxt.beginPath();
cxt.lineWidth=5;
cxt.strokeStyle="beige";
cxt.arc(250,250,200,0,2*Math.PI,false);
cxt.stroke();
cxt.closePath();
for(var i=0;i<12;i++){
cxt.beginPath();
cxt.save();
cxt.strokeStyle="purple";
cxt.lineWidth=5;
cxt.translate(250,250);
cxt.rotate(i*30*Math.PI/180);
cxt.moveTo(0,-170);
cxt.lineTo(0,-190);
cxt.stroke();
cxt.restore();
cxt.closePath();
}
/* 表盘 */
for(var i=0;i<60;i++){
cxt.beginPath();
cxt.save();
cxt.strokeStyle="gold";
cxt.lineWidth=3;
cxt.translate(250,250);
cxt.rotate(i*6*Math.PI/180);
cxt.moveTo(0,-180);
cxt.lineTo(0,-190);
cxt.stroke();
cxt.restore();
cxt.closePath();
}
/* 时针 */
cxt.beginPath();
cxt.save();
cxt.strokeStyle="green";
cxt.lineWidth=5;
cxt.translate(250,250);
cxt.rotate(hour*30*Math.PI/180);
cxt.moveTo(0,-140);
cxt.lineTo(0,10);
cxt.stroke();
cxt.restore();
cxt.closePath();
/* 分针 */
cxt.beginPath();
cxt.save();
cxt.strokeStyle="blue";
cxt.lineWidth=3;
cxt.translate(250,250);
cxt.rotate(min*6*Math.PI/180);
cxt.moveTo(0,-160);
cxt.lineTo(0,15);
cxt.stroke();
cxt.restore();
cxt.closePath();
/* 秒针 */
cxt.beginPath();
cxt.save();
cxt.strokeStyle="red";
cxt.lineWidth=1.5;
cxt.translate(250,250);
cxt.rotate(sec*6*Math.PI/180);
cxt.moveTo(0,-168);
cxt.lineTo(0,20);
cxt.stroke();
cxt.restore();
cxt.closePath();
cxt.beginPath();
cxt.strokeStyle="red";
cxt.fillStyle="#bbb";
cxt.lineWidth=2;
cxt.arc(250,250,5,0,2*Math.PI,false);
cxt.stroke();
cxt.fill();
cxt.restore();
cxt.closePath();
cxt.beginPath();
cxt.save();
cxt.strokeStyle="red";
cxt.lineWidth=2;
cxt.translate(250,250);
cxt.rotate(sec*6*Math.PI/180);
cxt.arc(0,-150,5,0,2*Math.PI,false);
cxt.stroke();
cxt.fill();
cxt.restore();
cxt.closePath();
cxt.beginPath();
cxt.fillStyle="yellow";
cxt.font="30px 宋体"
cxt.fillText("青岛时间",200,405);
cxt.closePath();
}
setInterval(drawClock,1000)
</script>
<script type="text/javascript">
function getDou(number) {
if(number < 10) {
return '0' + number;
} else {
return number;
}
}
function getWeek(week) {
var sWeek = null;
switch(week) {
case 0:
sWeek = '星期日'
break;
case 1:
sWeek = '星期一'
break;
case 2:
sWeek = '星期二'
break;
case 3:
sWeek = '星期三'
break;
case 4:
sWeek = '星期四'
break;
case 5:
sWeek = '星期五'
break;
case 6:
sWeek = '星期六'
break;
default:
break;
}
return ' ' + sWeek;
}
window.onload = function() {
var oDate = document.getElementsByTagName("p")[0];
var oTime = document.getElementsByTagName("p")[1];
function tick() {
var date = new Date();
var sDate = null;
var sTime = null;
var hours = date.getHours();
if(hours > 12) {
hours %= 12;
sTime = '下午 ';
} else {
sTime = '上午 ';
}
sTime += getDou(hours) + ':' + getDou(date.getMinutes()) + ':' + getDou(date.getSeconds());
sTime += getWeek(date.getUTCDay());
oTime.innerHTML = sTime;
sDate = date.getUTCFullYear() + "年";
if(date.getUTCMonth() < 9) {
sDate += '0' + (date.getUTCMonth() + 1) + "月";
} else {
sDate += (date.getUTCMonth() + 1) + "月";
}
sDate += date.getUTCDate() + "日";
oDate.innerHTML = sDate;
}
setInterval(tick, 1000);
tick();
}
</script>
<style type="text/css">
body {
width: 800px;
height: 500px;
/* background:black ; */
background-image: url("../3.jpg");background-size: 100% 100%;
vertical-align: middle;
display: table-cell;
}
.date {
text-align: center;
color: white;
font-size: 50px;
}
.time {
text-align: center;
color: white;
font-size: 40px;
}
</style>
</head>
<body>
<div>
<p class="date">
日期
</p>
<p class="time">
时间
</p>
</div>
</body>
</body>
</html>
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