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Chapter II Drawing of Simple graphsHTML5 supports drawing graphics directly on Web pages using canvas and SVG. SVG is suitable for drawing high-quality vector graphics, not suitable for playing games, so we do the game generally use canvas.Since this tutorial is simple as the principle, so in the beginner stage please do not distract attention to the art, quality and other details, we only need to master th
if(dir== +) Alert (" Down"); Else if(dir==Panax Notoginseng) Alert (" Left") Else if(dir== the) Alert (" Right");} Script>Head> Bodyonkeydown= "Functionkeydown (event)">Body>Second, use the keyboard cursor to move the graphicNow that we've learned to capture a keyboard keystroke, we can use it to move the graphics on the screen!The basic method is this: is through the keyboard keys to change the coordinates, such as the right, let the x-coordinate larger, if it is downward, let the y-coordin
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