HTML5의 캔버스 구현은 간단한 직사각형과 삼각형을 그립니다.

<canvas id="demo" width="600" height="600"></canvas>

<script language="javascript"> 
var cxt=document.getElementById(&#39;demo&#39;).getContext("2d"); 
cxt.beginPath(); 
cxt.fillStyle="#F00";/*设置填充颜色*/ 
cxt.fillRect(0,0,200,100);/*绘制一个矩形，前两个参数决定开始位置，后两个分别是矩形的宽和高*/ 
cxt.beginPath(); 
cxt.strokeStyle="#000";/*设置边框*/ 
cxt.lineWidth=3;/*边框的宽度*/ 
cxt.strokeRect(0,120,200,100); 
cxt.beginPath(); 
cxt.moveTo(0,350); 
cxt.lineTo(100,250); 
cxt.lineTo(200,300); 
cxt.closePath();/*可选步骤，关闭绘制的路径*/ 
cxt.stroke(); 
</script>