lnr/Originals/Website/games/reflex/reflex.js
2021-04-15 17:26:34 -07:00

83 lines
1.9 KiB
JavaScript
Executable File

var startTime=new Date();
var endTime=new Date();
var startPressed=false;
var bgChangeStarted=false;
var maxWait=20;
var timerID;
function startTest()
{
document.bgColor=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.bgColor="black";
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("You pressed STOP 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());
}
}