纠错<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>矩形</title> </head> <body> <canvas id="mycanvas" width=""height=""></canvas> <script> var mycanvas=document.getElementById("mycanvas"); var conText=mycanvas.getContext("2d"); conText.fillStyle="red"; conText.fillRect (0,0,200,100); conText.strokeStyle="blue"; conText.lineWidth=8; conText.strokerRect (15,15,100,200); </script> </body> </html>
理解问题纠错<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>矩形</title> </head> <body> <canvas id="mycanvas" width=""height=""></canvas> <script> var mycanvas=document.getElementById("mycanvas"); var conText=mycanvas.getContext("2d"); conText.fillStyle="red"; conText.fillRect (0,0,200,100); conText.strokeStyle="blue"; conText.lineWidth=8; conText.strokerRect (15,15,100,200); </script> </body> </html>
已完成理解「纠错<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>矩形</title> </head> <body> <canvas id="mycanvas" width=""height=""></canvas> <script> var mycanvas=document.getElementById("mycanvas"); var conText=mycanvas.getContext("2d"); conText.fillStyle="red"; conText.fillRect (0,0,200,100); conText.strokeStyle="blue"; conText.lineWidth=8; conText.strokerRect (15,15,100,200); </script> </body> </html>」
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在提供的 HTML 代码中，存在一些错误需要纠正。以下是错误列表及其修正方法：
<canvas>标签的width和height属性值没有指定。应该为这两个属性提供具体的数值来定义画布的大小。getContext("2d")方法中的Context拼写错误，应为context。strokeRect方法中的strokeRect拼写错误，应为strokeRect。
以下是修正后的代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>矩形</title>
</head>
<body>
<canvas id="mycanvas" width="300" height="200"></canvas>
<script>
var mycanvas = document.getElementById("mycanvas");
var context = mycanvas.getContext("2d"); // 修正了Context的拼写
context.fillStyle = "red";
context.fillRect(0, 0, 200, 100);
context.strokeStyle = "blue";
context.lineWidth = 8;
context.strokeRect(15, 15, 100, 200); // 修正了strokerRect的拼写
</script>
</body>
</html>
请注意，<canvas> 标签的 width 和 height 属性值被设置为 300 和 200，这些值可以根据需要进行调整。78