编辑代码:
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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"/> <style> canvas { border: 1px solid #d3d3d3; background-color: #f1f1f1; } </style> </head> <body onload="startGame()"> <script> function startGame() { myGameArea.start(); } var myGameArea = { canvas : document.createElement("canvas"), start : function() { this.canvas.width = 480; this.canvas.height = 270; this.context = this.canvas.getContext("2d"); document.body.insertBefore(this.canvas, document.body.childNodes[0]); } } </script> <p>We have created a game area! (or at least an empty canvas)</p> </body> </html>