JQuery hide Class if other class is visible or shown

Found similar questions but nothing that covers exactly what I need. I kept it simple in my example and I want to use JQuery.

I have two classes. I want to hide the "filter" div if the "category" div is shown on page load. There are currently NO styles associated with either class. I believe I am pretty close but it doesn't work.

<script language="text/javascript">
$('filter').css('display', 'none');

<div class="category">By Category</div>
<div class="filter">By Custom Filter</div>

Thanks in advance!


Use .length to test if an element is present.

Use .hide() & .show() to show and hide elements.

And finally, you want the code to run only when the page has finished loading, so you want to wrap it all in $(document).ready().

So something like this should work best:

<script language="text/javascript">
    $(document).ready(function() {
        //following code will hide all elements with a class of 'filter'
        //if any elements with a class of 'category' are found

<div class="category">By Category</div>
<div class="filter">By Custom Filter</div>

HTHs, Charles

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