Issue with JS app

Discussion in 'JavaScript' started by VanHansen, Mar 17, 2010.

0
  1. #1
    Hi people! I got some issues that I need help with. I'm new to JS so dont be hatin'

    I need a timer, that counts down from 20 seconds, everytime you get a correct answere you get another second added, each time you get the answere wrong, you get one second less.. Have a look at the code, and test it out, you'll understand :)

    <script type="text/javascript">

    var tall1, tall2;
    var løsning;
    var førstegang = true;

    var svar;
    var resultat;
    var poeng = 0;
    var sekunder = 20

    function startSpill()
    {
    if(førstegang)
    {
    førstegang = false;
    }
    else
    {
    lagLøsning();
    sjekkSvar();
    }
    tall1 = Math.floor(1 + Math.random() * 10);
    tall2 = Math.floor(1 + Math.random() * 10);
    start();

    }

    function start()
    {
    document.getElementById("regnestykke").innerHTML = tall1 + " * " + tall2 + " = <input id='svar' type='text' /><input type='button' onclick='startSpill()'value='Svar' />";
    }

    function lagLøsning()
    {
    løsning = tall1 * tall2;
    }

    function sjekkSvar()
    {
    svar = document.getElementById("svar").value;
    if(svar == løsning)
    {
    poeng++;
    document.getElementById("poeng").innerHTML = "Poeng:" + poeng;
    }
    else
    {
    poeng--;
    document.getElementById("poeng").innerHTML = "Poeng:" + poeng;
    }
    }

    function nedtelling()
    {
    if(førstegang)
    {
    førstegang = false;
    }
    else
    {
    startNedtelling()
    }
    }

    function startNedtelling()
    {
    sekunder --;
    setInterval("sekunder",1000);
    document.getElementById("klokke").innerHTML = "Tid:" + sekunder;
    }



    </script>

    </head>

    <body>

    <h1>Mattegeni!</h1>

    <div id="regnestykke">


    <label> Trykk på start for begynne! <input type="button" value="Start" onclick="startSpill()" /> </label>

    </div> <!-- regnestykke -->

    <div id="poeng">
    </div>

    <div id="klokke">
    </div>


    </body>
    </html>


    Thanks alot for any suggestions and help :D

    -peace
     
    VanHansen, Mar 17, 2010 IP
  2. inegoita

    inegoita Member

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    #2
    Hi

    setInterval takes a function call as the first param, so it should be something like

    setInterval("startNedtelling()",1000);

    it's pretty difficult to follow your code (my norwegian is a bit rusty :) )
    let me know if it works

    kind regards,
    John
     
    inegoita, Mar 21, 2010 IP
  3. VanHansen

    VanHansen Peon

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    #3
    It help a bit, but it was to late :p And I failed, so yeh..
     
    VanHansen, Mar 22, 2010 IP