• # February 26, 2013 at 1:11 pm

    []( “”)

    My function is not defined in full mode.

    I can add the JS to the HTML box and get it working though.

    # February 26, 2013 at 2:13 pm

    Well something happens in Pen mode.

    Could this be a document.ready issue?

    # February 26, 2013 at 4:47 pm

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    Interesting, apparently codepen wraps the JavaScript in a self-invoking function in full mode, so your function doesn’t get added to global scope.

    (function() {

    function tabs(x){
    x.className += ” active”;

    var tab =;

    case “btn_desc”:

    case “btn_spec”:


    # February 27, 2013 at 7:37 am

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    Try = function(x) { ... } instead of function tab(x) { ... }

    # February 27, 2013 at 7:42 am

    Thank you this works but `function tab(x)` should work too. I have now submitted the bug anyways.

    # February 27, 2013 at 7:47 am

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    Already told you why function tab(x) { ... } didn’t work. You’ve submitted it as bug to codepen? I’m curious if they are going to fix that because I think if you had the click listeners in JavaScript instead of inlined with the html (as you should have) it would have worked. Keeping scripting and markup separate. Nevertheless it’s a bug.

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