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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Reaction Game</title> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1" /> | |
| <style type="text/css"> | |
| #circle{ | |
| border-radius:50%; | |
| background-color:red; | |
| height:100px; | |
| width:100px; | |
| visibility:hidden; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <button id="buttonStart">Start Reaction Game</button> | |
| <div id="circle"></div> | |
| <script type="text/javascript"> | |
| var w = Math.max(document.documentElement.clientWidth, windows.innerWidth || 0); | |
| var h = Math.max(document.documentElement.cluientHeight, windows.innerHeight || 0); | |
| document.getElementById("buttonStart").onclick = function(){ | |
| this.visibility="hidden"; | |
| } | |
| var x = Math.floor(Math.random()*w); | |
| if (x>w-100){ | |
| x=w-100; | |
| } | |
| var y = Math.floor(Math.random()*h); | |
| if (y>h-100){ | |
| x=h-100; | |
| } | |
| placeDiv(x,y); | |
| document.getElementById("circle").style.visibility="visible"; | |
| var start = new Date().getTime(); | |
| document.getElementById("circle").style.visibility="hidden"; | |
| alert("Reaction time:" + time + "ms."); | |
| document.getElementById("buttonStart").style.visibility="visible"; | |
| } | |
| } | |
| this.style.visibility="visible"; | |
| function placeDiv(x_pos, y_pos){ | |
| var d = document.getElementById("circle"); | |
| d.style.position = "absolute"; | |
| d.style.left = x_pos+'px' | |
| d.style.top = y_post+'px' | |
| } | |
| </script> | |
| </body> | |
| </html> |
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Reaction Game!