Preventing Unwanted Scroll with jQuery

I'm currently working on a project where I have several description blocks that are meant to fade in when the corresponding image is clicked. The fading effect works fine, but there's an issue with the page scrolling up each time a new image is clicked, which can be disruptive for user navigation.

google.load("jquery", "1.3");
google.setOnLoadCallback(function() {
jQuery(function($) {

   $('#a').click(function(e){    
        $('#bio-b,#bio-c').fadeOut('slow', function(){
            $('#bio-a').fadeIn('slow');
        });
    });
});
});

As someone who is new to JavaScript/jQuery, I put this code together mostly by referencing examples online. I hope it's all in the right order.

edit: Here's the HTML for the image that triggers the click event:

<a href="#" id="a"><img></a>

Description:

<article id="bio-a" class="bio"></article>

And here's the CSS (the description block is initially hidden from view):

#bio-a {
    display : none;
}

Any ideas on what might be causing the scroll issue and how to address it?

Answer №1

When using an href of #, it essentially seeks out an element with an id of zero. This usually doesn't exist on the page. To resolve the issue of the link being 'followed', you must execute preventDefault on the event that is passed to your handle function.

Here's an example:

$('#a').click(function(e){    
    $('#bio-b,#bio-c').fadeOut('slow', function(){
        $('#bio-a').fadeIn('slow');
    });
    e.preventDefault();
});

Answer №2

If you want to avoid triggering a page scroll, consider removing the href="#" attribute from the link. The behavior of this attribute is not explicitly defined in the HTML standard. Some browsers may even reload the page when encountering this attribute, as it essentially points to a relative source and relies on browser implementation.

It's recommended to use the latest version of jQuery (1.10 or 2.0), but make sure to review the disclaimer for jQuery 2.0 before upgrading for any potential compatibility issues. Keep up with best practices for optimal performance! ;-)

Answer №3

I think this is the solution you've been searching for. If I've misunderstood your needs, please don't hesitate to inform me so I can make necessary adjustments:

$(document).ready(function(){

 $('.image').click(function(){    
   var findIdNumber = $(this).attr("id");
   $('#bio-' + findIdNumber).fadeIn();
   $("article").not('#bio-'+findIdNumber).fadeOut();     
  });
});

JSFIDDLE

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