<script language="JavaScript">
<!-- hiding for old browsers
// response time test, created by Jasper van Zandbeek
// e-mail: jasperz@net-v.com
var startTime=new Date();
var endTime=new Date();
var startPressed=false;
var bgChangeStarted=false;
var maxWait=20;
var timerID;
function startTest()
{
document.body.style.background=document.response.bgColorChange.options[document.response.bgColorChange.selectedIndex].text;
bgChangeStarted=true;
startTime=new Date();
}
function remark(responseTime)
{
var responseString="";
if (responseTime < 0.10)
responseString="Well done!";
if (responseTime >= 0.10 && responseTime < 0.20)
responseString="Nice!";
if (responseTime >=0.20 && responseTime < 0.30)
responseString="Could be better...";
if (responseTime >=0.30 && responseTime < 0.60)
responseString="Keep practising!";
if (responseTime >=0.60 && responseTime < 1)
responseString="Have you been drinking?";
if (responseTime >=1)
responseString="Did you fall asleep?";
return responseString;
}
function stopTest()
{
if(bgChangeStarted)
{
endTime=new Date();
var responseTime=(endTime.getTime()-startTime.getTime())/1000;
document.body.style.background="white";
alert("Your response time is: " + responseTime + " seconds " + "\n" + remark(responseTime));
startPressed=false;
bgChangeStarted=false;
}
else
{
if (!startPressed)
{
alert("press start first to start test");
}
else
{
clearTimeout(timerID);
startPressed=false;
alert("cheater! you pressed too early!");
}
}
}
var randMULTIPLIER=0x015a4e35;
var randINCREMENT=1;
var today=new Date();
var randSeed=today.getSeconds();
function randNumber()
{
randSeed = (randMULTIPLIER * randSeed + randINCREMENT) % (1 << 31);
return((randSeed >> 15) & 0x7fff) / 32767;
}
function startit()
{
if(startPressed)
{
alert("Already started. Press stop to stop");
return;
}
else
{
startPressed=true;
timerID=setTimeout('startTest()', 6000*randNumber());
}
}
// -->
</script>
<p>Test your Response time!</p>
Click on "Start" first, and wait until the background color changes. As soon as it changes, hit "stop!"
<form name="response">
Change background color in:
<select name="bgColorChange">
<option selected="">deeppink
</option><option>aliceblue
</option><option>crimson
</option><option>darkkhaki
</option><option>cadetblue
</option><option>darkorchid
</option><option>coral
</option><option>chocolate
</option><option>mediumslateblue
</option><option>tomato
</option><option>darkslategray
</option><option>limegreen
</option><option>cornflowerblue
</option><option>darkolivegreen
</option></select>
<input onclick="startit()" type="button" value="start" />
<input onclick="stopTest()" type="button" value="stop" />
</form>
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