日期:2014-05-17 浏览次数:20850 次
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
<title>HTML5</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
</head>
<body>
<canvas id="canvas" width="640" height="480"></canvas>
<script type="text/javascript">
$(document).ready(function(){
var canvas = $("#canvas").get(0);
var ctx = canvas.getContext("2d");
var width = canvas.width;
var height = canvas.height;
ctx.beginPath();
ctx.moveTo(0,0);
ctx.lineTo(width,0);
ctx.lineTo(width, height);
ctx.lineTo(0, height);
ctx.lineTo(0, 0);
ctx.lineWidth=12;
ctx.lineCap="round";
ctx.stroke();
$("#canvas").click(function(event) {
ctx.moveTo(event.pageX,event.pageY);
ctx.lineTo(0,0);
ctx.stroke();
});
});
</script>
</body>
</html>