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canvas基础练习(画线)

2015-11-26 13:20 239 查看
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>canvas</title>
<style>
body{
background:#808080;
}
#canvas{
background:#FFFFFF;
}
</style>
<script>
window.onload = function(){
//获取canvas画布
var canvas = document.getElementById('canvas');
//获取2d绘图环境
cxt = canvas.getContext('2d');

//画直线(绘图路径)
//开始路径
cxt.beginPath();
//画端点
cxt.moveTo(100,100);
cxt.lineTo(200,200);
cxt.lineTo(300,200);
//闭合路径
cxt.closePath();
//画线
cxt.stroke();

}
</script>
</head>
<body>
<canvas id="canvas" width="500" height="500"></canvas>
</body>
</html>


效果图:



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