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Thread: Javascript Switch Function

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  1. #1
    Join Date
    Aug 2013
    Posts
    2

    Javascript Switch Function

    Hello Guys,

    I am a newbie who is aspiring to develop cool stuff one day. Right now, i am still really green and read the dummy manual. Please help me and i will really appreciate it a lot.

    While doing one of the exercises, switch function, i cant seem to get it activated.

    The code is as follows. I used alert function to test variable, die. Thus, i guess the main problem got to be the switch statements.

    var die = Math.ceil(Math.random() * 6);
    var output = "";

    switch(die) {
    case 1:
    output = "I";
    break;
    case 2:
    output = "II";
    break;
    case 3:
    output = "III";
    break;
    case 4:
    output = "IV"
    break;
    case 5:
    output = "V";
    break;
    case 6:
    output = "VI";
    break;
    default:
    output = "PROBLEM!";
    }

  2. #2
    Join Date
    May 2006
    Location
    Somewhere behind your screen
    Posts
    1,716
    ; seems to be missed at case 4 after output = "IV". to avoid such errors try to compose the code so that it can be easily observed.

    working example:

    Code:
    <!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8" />
    <title>Switch</title>
    <script type="text/javascript">
    var to="";
    function doit(){
    var die=Math.ceil(Math.random() * 6);
    var output="";
    switch(die){
    case 1:output="I";break;
    case 2:output="II";break;
    case 3:output="III";break;
    case 4:output="IV";break;
    case 5:output="V";break;
    case 6:output="VI";break;
    default:output="PROBLEM!";
    }
    document.getElementById('autpoot').innerHTML=output;
    to=setTimeout(doit,1000);
    }
    
    window.onload=function(){
    document.getElementById('lnk').onclick=function(){clearTimeout(to);}
    doit();
    }
    </script>
    </head>
    <body>
    <center><br /><br /><br /><br /><br /><div id="autpoot"></div><br /><br /><a href="#null" id="lnk">stop it</a></center>
    </body>
    </html>
    and pls read my signature <wink>
    signature under construction

  3. #3
    Join Date
    Jun 2008
    Posts
    106
    @Padonak: That won't affect anything, in this example. The compiler will insert a semicolon there. It is best to add them in, though.


    @chesteron: The code works for me. I suggest you use Math.floor instead of Math.ceil, though. It's better when working with Math.random()
    I have a skype if you have any other questions (thetenfold).
    ps: It's called a switch statement, not function, just so you know.

  4. #4
    Join Date
    Aug 2013
    Posts
    2
    @Padonak: Thanks. I will be sure to keep it in mind. I am currently kinda working with external script sheet which is why i am not putting the script tag.

    @tenfold. Thanks for correcting. For some reason, i tried creating switch statement of other sort, the really basic type, but it still aint working.

    I am using Safari version 5.06 and currently coding from my dreamweaver, then testing it out via safari (preview output). I am guessing its the infrastructure problem that i am having. Reason why i am still using old browser is because my mac is OS X 10.5. Planning to get a new ultrabook if there are good deals out there, so meanwhile, i am going to stick to the old versions.

    Yes, and i will be adding you. Thanks for the helping hand, appreciate it.

  5. #5
    Join Date
    Jun 2008
    Posts
    106
    You're welcome Does Safari 5.06 have an error console? If so, you should check it.
    Otherwise, I can't see any errors in that current code. Maybe Dreamweaver is doing something funny? Dunno, never used it.

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