画一条直线，Canvas绘图详解教程-慕课网

index.html

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<canvas id="canvas" style="border:1px solid #aaa;display:block;margin:50px auto;">
    当前浏览器不支持Canvas，请更换浏览器后再试
</canvas>
 
<script>
    window.onload = function(){
 
        var canvas = document.getElementById("canvas");
 
        canvas.width = 800;
        canvas.height = 800;
 
 
 
 
 
    }
</script>
</body>
</html>

画一条直线

任务