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Thread: Javascript Code Help

  1. #1
    Join Date
    Jul 2013
    Posts
    4

    Javascript Code Help

    I have the following JS code which creates a calculator, however the calculator isn't functioning properly. Only the last 2 commands for each set of outputs are working. Anyone know why?

    function weightVolume(a) {

    var outPut = '';
    if(a <= 90) { outPut = '0-76'; }
    if(a < 110) { outPut = '94-110'; }
    if(a < 130) { outPut = '111-127'; }
    if(a < 150) { outPut = '128-144'; }
    if(a < 170) { outPut = '145-161'; }
    if(a < 190) { outPut = '162-178'; }
    if(a < 210) { outPut = '196-212'; }
    if(a > 230) { outPut = '213-230'; }
    document.getElementById("volume").innerHTML = outPut + ' Litres';

    }

    function heightWidth(a) {
    var outPut = '';
    if(a <= 60) { outPut = '30'; }
    if(a <= 72) { outPut = '31-32'; }
    if(a > 72) { outPut = '32'; }
    document.getElementById("width").innerHTML = outPut + 'in';
    }

    function areaLength(a) {
    var outPut = '';
    if(a === "Cruising" ) { outPut = "10&rsquo;6 or 12&rsquo;"; }
    if(a === "Surf" ) { outPut = "10&rsquo; or Less"; }
    if(a === "Racing" ) { outPut = "12&rsquo; or More"; }
    document.getElementById("area").innerHTML = outPut;
    }

  2. #2
    Join Date
    Oct 2010
    Location
    Versailles, France
    Posts
    1,290
    If a is 80 then all lines of the function weightVolume are true except the last.
    Then you have to use some else statements !

  3. #3
    Join Date
    Jul 2013
    Posts
    4
    Could you give a suggestion?

  4. #4
    Join Date
    Sep 2007
    Posts
    390
    http://www.w3schools.com/js/js_if_else.asp

    http://www.w3schools.com/js/tryit.as...e=tryjs_elseif

    Code:
     
    <script type="text/javascript">
    
    var a = 80;
    
    var n = [a <= 90, a< 110, a < 130, a < 150, a < 170, a < 190, a < 210, a > 230];
    
    alert(n);
    
    var k = ['0-76','94-110','111-127','128-144','145-161','162-178','196-212','213-230'];
    
    var i, outPut = '';
     
      for(i=0; i< n.length; i++) {
    
      if( n[i] ) { outPut = k[i] + ' litres' ; break; }
    }
    
    alert('outPut= '+ outPut );
    
    </script>
    Last edited by Ayşe; 07-03-2013 at 04:21 PM.

  5. #5
    Join Date
    Jul 2013
    Posts
    4
    Ayse,

    Thank you for the suggestion but that code doesn't work correctly.

  6. #6
    Join Date
    Jul 2013
    Posts
    4
    However, the link you provided helped me figure it out, so thank you!

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