<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>canvas实例--制作时钟</title>
</head>
<body>
<canvas id="canvas" width="500" height="500" >
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</canvas>
<script>
//获取canvas
var canvas = document.getElementById("canvas")
//设置环境
var cxt = canvas.getContext("2d")
//制作时钟的函数
function DrawClock() {
//清除画布
cxt.clearRect(0,0,500,500)
//获取当前时间的时，分，秒
var now = new Date()
var hour = now.getHours()
var min = now.getMinutes()
var sec = now.getSeconds()
//小时必须获取浮点型（小时+分数--->转化为的小时）
hour = hour + min / 60
//将24小时转换为12小时
hour = hour >12 ? hour - 12 : hour
//制作表盘
cxt.beginPath()
cxt.lineWidth = 10
cxt.strokeStyle = "#ABCDEF"
cxt.arc(250, 250, 200, 0, 360, false)
cxt.stroke()
cxt.closePath()
//刻度
//时针
for (var i = 0i <12i++) {
cxt.save()
cxt.lineWidth = 7
cxt.strokeStyle = "red"
//设置0,0点
cxt.translate(250, 250)
//再设置旋转角度
cxt.rotate(i * 30 * Math.PI / 180)
cxt.beginPath()
cxt.moveTo(0, -170)
cxt.lineTo(0, -190)
cxt.closePath()
cxt.stroke()
cxt.restore()
}
//分针
for (var i = 0i <60i++) {
//为避免不同颜色的重叠，
//在时针刻度与分针刻度重叠的位置，不画分针
if (i % 5 == 0) continue
cxt.save()
//设置刻度粗细
cxt.lineWidth = 5
cxt.strokeStyle = "purple"
//设置画布的0,0点
cxt.translate(250, 250)
//设置旋转角度
cxt.rotate(i * 6 * Math.PI / 180)
//画分针刻度
cxt.beginPath()
cxt.moveTo(0, -180)
cxt.lineTo(0, -190)
cxt.closePath()
cxt.stroke()
cxt.restore()
}
//时针
cxt.save()
//设置时针风格
cxt.lineWidth = 7
cxt.strokeStyle = "pink"
//设置异次元空间的0,0点
cxt.translate(250, 250)
//设置旋转角度
cxt.rotate(hour * 30 * Math.PI / 180)
cxt.beginPath()
cxt.moveTo(0, -140)
cxt.lineTo(0, 10)
cxt.closePath()
cxt.stroke()
cxt.restore()
//分针
cxt.save()
//设置分针风格
cxt.lineWidth = 5
cxt.strokeStyle = "orange"
//设置异次元空间的0,0点
cxt.translate(250, 250)
//设置旋转角度
cxt.rotate(min * 6 * Math.PI / 180)
cxt.beginPath()
cxt.moveTo(0, -160)
cxt.lineTo(0, 15)
cxt.closePath()
cxt.stroke()
cxt.restore()
//秒针
cxt.save()
//风格
cxt.strokeStyle = "yellow"
cxt.lineWidth = 3
//重置0，0点
cxt.translate(250, 250)
//设置旋转角度
cxt.rotate(sec*6*Math.PI/180)
//画图
cxt.beginPath()
cxt.moveTo(0, -170)
cxt.lineTo(0, 20)
cxt.stroke()
//画出时针，分针，秒针的交叉点
cxt.beginPath()
cxt.arc(0, 0, 5, 0, 360, false)
cxt.closePath()
//设置填充样式
cxt.fillStyle = "blue"
cxt.fill()
//设置笔触样式--->秒针已设置
cxt.stroke()
//设置秒针前端的小圆点
cxt.beginPath()
cxt.arc(0, -150, 5, 0, 360, false)
cxt.closePath()
//设置填充样式
cxt.fillStyle = "blue"
cxt.fill()
//设置笔触样式
cxt.stroke()
cxt.closePath()
cxt.restore()
}
//调用函数
DrawClock()
//设置时钟转动起来
setInterval(DrawClock, 1000)
</script>
</body>
</html>
代码下：<html>
<head>
<style>
.tab,.tab tr td{border:1px solid #000border-collapse:collapse}
</style>
</head>
<body>
<table class="tab">
<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
<tr><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
</table>
</body>
</html>
说明：
.tab,.tab tr td{}
这个叫css集体声明，中间用英文的逗号隔开。作用是：同是把表格及单元格的一块声明，因为两者用的css是完全一样的。
属性说明:
border:1px solid #000设置表格边框的：宽度1px 实线 黑色
border-collapse:collapse作用是，合并相邻的双线,合为单线。
提供个参考代码，主要代码HTMl部分：
<div id="watch">
<div class="frame-face"></div>
<ul class="minute-marks">
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
<li></li><li></li><li></li><li></li><li></li><li></li>
</ul>
<div class="digital-wrap">
<ul class="digit-hours">
<li>23</li>
<li>00</li><li>01</li><li>02</li><li>03</li><li>04</li><li>05</li>
<li>06</li><li>07</li><li>08</li><li>09</li><li>10</li><li>11</li>
<li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li>
<li>18</li><li>19</li><li>20</li><li>21</li><li>22</li>
</ul>
<ul class="digit-minutes">
<li>10</li><li>11</li>
<li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li>
<li>18</li><li>19</li><li>20</li><li>21</li><li>22</li><li>23</li>
<li>24</li><li>25</li><li>26</li><li>27</li><li>28</li><li>29</li>
<li>30</li><li>31</li><li>32</li><li>33</li><li>34</li><li>35</li>
<li>36</li><li>37</li><li>38</li><li>39</li><li>40</li><li>41</li>
<li>42</li><li>43</li><li>44</li><li>45</li><li>46</li><li>47</li>
<li>48</li><li>49</li><li>50</li><li>51</li><li>52</li><li>53</li>
<li>54</li><li>55</li><li>56</li><li>57</li><li>58</li><li>59</li>
<li>00</li><li>01</li><li>02</li><li>03</li><li>04</li><li>05</li>
<li>06</li><li>07</li><li>08</li><li>09</li>
</ul>
<ul class="digit-seconds">
<li>20</li><li>21</li><li>22</li><li>23</li>
<li>24</li><li>25</li><li>26</li><li>27</li><li>28</li><li>29</li>
<li>30</li><li>31</li><li>32</li><li>33</li><li>34</li><li>35</li>
<li>36</li><li>37</li><li>38</li><li>39</li><li>40</li><li>41</li>
<li>42</li><li>43</li><li>44</li><li>45</li><li>46</li><li>47</li>
<li>48</li><li>49</li><li>50</li><li>51</li><li>52</li><li>53</li>
<li>54</li><li>55</li><li>56</li><li>57</li><li>58</li><li>59</li>
<li>00</li><li>01</li><li>02</li><li>03</li><li>04</li><li>05</li>
<li>06</li><li>07</li><li>08</li><li>09</li><li>10</li><li>11</li>
<li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li>
<li>18</li><li>19</li>
</ul>
</div>
<ul class="digits">
<li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li>
<li>7</li><li>8</li><li>9</li><li>10</li><li>11</li><li>12</li>
</ul>
<div class="hours-hand"></div>
<div class="minutes-hand"></div>
<div class="seconds-hand"></div>
</div>
css部分：
body { font-size:62.5%margin:1embackground:#232425 }
ul { list-style:nonemargin:0padding:0 }
#watch { font-size:1emposition:relative }
#watch .frame-face {
position:relative
width:30em
height:30em
margin:2em auto
border-radius:15em
background:-webkit-linear-gradient(top, #f9f9f9,#666)
background:-moz-linear-gradient(top, #f9f9f9,#666)
background:linear-gradient(to bottom, #f9f9f9,#666)
box-shadow:rgba(0,0,0,.8) .5em .5em 4em
}
#watch .frame-face:before {
content:''
width:29.4em
height:29.4em
border-radius:14.7em
position:absolute
top:.3emleft:.3em
background:
-webkit-linear-gradient(135deg, rgba(246,248,249,0) 0%,rgba(229,235,238,1) 50%,rgba(205,212,217,1) 51%,rgba(245,247,249,0) 100%),
-webkit-radial-gradient(center, ellipse cover, rgba(246,248,249,1) 0%,rgba(229,235,238,1) 65%,rgba(205,212,217,1) 66%,rgba(245,247,249,1) 100%)
background:
-moz-linear-gradient(135deg, rgba(246,248,249,0) 0%,rgba(229,235,238,1) 50%,rgba(205,212,217,1) 51%,rgba(245,247,249,0) 100%),
-moz-radial-gradient(center, ellipse cover, rgba(246,248,249,1) 0%,rgba(229,235,238,1) 65%,rgba(205,212,217,1) 66%,rgba(245,247,249,1) 100%)
background:
linear-gradient(135deg, rgba(246,248,249,0) 0%,rgba(229,235,238,1) 50%,rgba(205,212,217,1) 51%,rgba(245,247,249,0) 100%),
radial-gradient(ellipse at center, rgba(246,248,249,1) 0%,rgba(229,235,238,1) 65%,rgba(205,212,217,1) 66%,rgba(245,247,249,1) 100%)
}
#watch .frame-face:after {
content:''
width:28em
height:28em
border-radius:14.2em
position:absolute
top:.9emleft:.9em
box-shadow:inset rgba(0,0,0,.2) .2em .2em 1em
border:.1em solid rgba(0,0,0,.2)
background:-webkit-linear-gradient(top, #fff, #ccc)
background:-moz-linear-gradient(top, #fff, #ccc)
background:linear-gradient(to bottom, #fff, #ccc)
}
#watch .minute-marks li {
display:block
width:.2em
height:.6em
background:#929394
position:absolute
top:50%left:50%
margin:-.4em 0 0 -.1em
}
#watch .minute-marks li:first-child {transform:rotate(6deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(2) {transform:rotate(12deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(3) {transform:rotate(18deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(4) {transform:rotate(24deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(5) {transform:rotate(36deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(6) {transform:rotate(42deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(7) {transform:rotate(48deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(8) {transform:rotate(54deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(9) {transform:rotate(66deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(10) {transform:rotate(72deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(11) {transform:rotate(78deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(12) {transform:rotate(84deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(13) {transform:rotate(96deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(14) {transform:rotate(102deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(15) {transform:rotate(108deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(16) {transform:rotate(114deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(17) {transform:rotate(126deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(18) {transform:rotate(132deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(19) {transform:rotate(138deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(20) {transform:rotate(144deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(21) {transform:rotate(156deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(22) {transform:rotate(162deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(23) {transform:rotate(168deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(24) {transform:rotate(174deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(25) {transform:rotate(186deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(26) {transform:rotate(192deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(27) {transform:rotate(198deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(28) {transform:rotate(204deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(29) {transform:rotate(216deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(30) {transform:rotate(222deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(31) {transform:rotate(228deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(32) {transform:rotate(234deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(33) {transform:rotate(246deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(34) {transform:rotate(252deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(35) {transform:rotate(258deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(36) {transform:rotate(264deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(37) {transform:rotate(276deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(38) {transform:rotate(282deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(39) {transform:rotate(288deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(40) {transform:rotate(294deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(41) {transform:rotate(306deg) translateY(-12.7em)}
#watch .minute-marks li:nth-child(42) {transform:rotate(312deg) translateY(-12.7em)}
translateY(-12.7em)}
#watch .minute-marks li:nth-child(48) {transform:rotate(354deg) translateY(-12.7em)}
#watch .digits {
width:30em
height:30em
border-radius:15em
position:absolute
top:0left:50%
margin-left:-15em
}
#watch .digits li {
font-size:1.6em
display:block
width:1.6em
height:1.6em
position:absolute
top:50%left:50%
line-height:1.6em
text-align:center
margin:-.8em 0 0 -.8em
font-weight:bold
}
#watch .digits li:nth-child(1) { transform:translate(3.9em, -6.9em) }
#watch .digits li:nth-child(2) { transform:translate(6.9em, -4em) }
:translate(0, -8em) }
#watch .digits:before {
content:''
width:1.6em
height:1.6em
border-radius:.8em
position:absolute
top:50%left:50%
margin:-.8em 0 0 -.8em
background:#121314
}
#watch .digits:after {
content:''
width:4em
height:4em
border-radius:2.2em
position:absolute
top:50%left:50%
margin:-2.1em 0 0 -2.1em
border:.1em solid #c6c6c6
background:-webkit-radial-gradient(center, ellipse cover, rgba(200,200,200,0), rgba(190,190,190,1) 90%, rgba(130,130,130,1) 100%)
background:-moz-radial-gradient(center, ellipse cover, rgba(200,200,200,0), rgba(190,190,190,1) 90%, rgba(130,130,130,1) 100%)
background:radial-gradient(ellipse at center, rgba(200,200,200,0), rgba(190,190,190,1) 90%, rgba(130,130,130,1) 100%)
}
