Issue encountered when concealing page elements followed by revealing them again

My goal is to conceal an id within a page and then reveal it once all the JavaScript has finished loading on the page. The JavaScript I am using to display the content again is:

$(document).ready(function() {
   $("#HomePage")[0].style.visibility = "visible";
   $('#HomePage').addClass('animated fadeIn'); 
   $("#CategoryPage")[0].style.visibility = "visible";
   $('#CategoryPage').addClass('animated fadeIn'); 
}

The CSS I am utilizing is as follows:

#HomePage { visibility:hidden; }
#CategoryPage { visibility:hidden; }

Here is the HTML for the home page:

<html>
 <body>
  <section id="HomePage" class="main-content">
   ...
  </section>
 </body>
</html>

And here is the HTML for the category page:

<html>
 <body>
  <section id="CategoryPage" class="main-content">
   ...
  </section>
 </body>
</html>

While this method successfully works for the home page, it seems that when I navigate to the category page, the JavaScript does not run. I am encountering an error on both pages, but I'm uncertain if this would affect it since it still runs on the home page - Uncaught TypeError: Cannot read property 'style' of undefined. Does anyone have any suggestions?

Answer №1

Is #HomePage present on the #CategoryPage? If my understanding is correct, it will attempt to find #HomePage within the context of #CategoryPage and report back that it is indeed not defined.

If you are utilizing jQuery, the following code snippet should be effective.

$(document).ready(function() {
      $("#HomePage").css('visibility', 'visible');
      $('#HomePage').addClass('animated fadeIn');
      $("#CategoryPage").css('visibility', 'visible');
      $('#CategoryPage').addClass('animated fadeIn');
    }

Answer №2

It seems like the issue may arise when trying to access the [0] index. If '#HomePage' or '#CategoryPage' is not present, an error will be thrown because the first item in the array does not exist. You can try the following solution...

$(document).ready(function() {
   $("#HomePage").css("visibility", "visible"); 
   $('#HomePage').addClass('animated fadeIn'); 
   $("#CategoryPage").css("visibility", "visible"); 
   $('#CategoryPage').addClass('animated fadeIn'); 
}

jQuery will apply css() to all matching items (or none if there are no matches).

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