如果画布看起来变形，请尝试更改高度和宽度-
<canvas id = ”canvas1” width = '400' height = '300'></canvas>
HTML5中画布的默认高度和宽度为2/1比率-
width = 300 height = 150
让我们看一个例子-
<!DOCTYPE HTML> <html> <head> <style> #mycanvas{border:1px solid red;} </style> </head> <body> <canvas id = "mycanvas" width = "100" height = "100"></canvas> </body> </html>