naming division id anything I want

 

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  • What are valid values for the id attribute in HTML? 21 answers

    • Yes, you can use whatever ID you can come up with.

    In JavaScript

    This used to be a limitation when you wanted to access elements via their ID in some old browsers (Internet Explorer 5-6), that added functionality to access elements with an ID, for example: 

    document.all.middle // worked
document.all.yellow box // did not work (of course)

    This behavior was only supported by Internet explorer however, and should not be used . Use something like this to access an element in JavaScript instead: 

    document.getElementById('my dog').textContent = 'Hello';
document.getElementById('the green hornet') = 'World';

    In CSS

    You need to escape spaces in CSS: 

    div#my weird spaced id {
  /* does not work */
}


    div#my weird spaced id {
  /* works */
}

    This does not work for classes however: 

    <div class="a b c">color me!</div>


    div.a b c { color: red } /* does not work */

    For classes, abc means "class a and class b and class c". If you really really have to use them this way, you can style them via dot notation: 

    `div.a.b.c { color: red } /* works */

    The best practice is to name them dash-separated, eg my-fancy-class , main-nav-header , etc.
    If you prefer camelCase or underscore_notation, you can use them too, but dash-seprarated is more widespread.

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