Adjusting the CSS for a specific element while hovering over another

I'm currently facing the challenge of creating a fixed position navbar with white links that should change to black when hovering over another element with a white background.

Here is the CSS for the navbar links:

nav ul li a {color:#ffffff;}

CSS for the fixed navbar:

nav {position:fixed;}

CSS for the white background element:

div.white {background-color:#ffffff;}

Let's consider the HTML structure:

<nav><ul><li><a>Link</a></li></ul></nav>
<!-- A hero image goes here -->
<div id="heroimage"></div>
<div class="white">

Due to the fixed position of the navbar, scrolling the webpage will cause it to overlap the white div, making the links "invisible". I'm seeking a solution to make the links turn black only when they are on top of the white div.

Is there a way to achieve this using JQuery? What functions should I be looking for? I have been unable to find a solution elsewhere...

jqueryhtmlcss

Answer №1

Alright, let's take a look at the changes I made based on your request. To see the color change in the "NAVBAR", you will need to scroll down. I hope this clears things up for you. Feel free to ask if you have any doubts or questions.

Update:

Now that I understand your requirement better, here's an updated Fiddle for you to check out. https://jsfiddle.net/u96xa39L/2/

HTML:

<div id="colorMeDifferent" class="blackbarwhitelinks">NAVBAR</div>

<div class="hugeDiv">Color remains the same on overlap</div>

<div id="hoveroverme" class="hoverBar">Colors change on overlap</div>

<div class="hugeDiv">Color remains the same on overlap</div>

Jquery/Javascript

$(window).scroll(function() {
  var hoverElement = $("#hoveroverme");
  var elementsToChange = $("#colorMeDifferent");

  if ( Math.abs(hoverElement.offset().top - elementsToChange.offset().top)  <= hoverElement.height()) {
    elementsToChange[0].className = "whiteBarBlackLinks";       
  } else {
    elementsToChange[0].className = "blackbarwhitelinks";
  }
});

CSS

#colorMeDifferent {
  position: fixed;
}

.blackbarwhitelinks {
  background-color: black;
  color: white;
}

.whiteBarBlackLinks {
  background-color: white;
  color:black;
}

.hugeDiv {
  min-height: 650px;
  background-color:red;
}

Answer №2

Almond's assistance provided a solid foundation for us. Here is the final outcome:

HTML

<nav><ul><li><a id="link">Link</a></li></ul></nav>
<!-- Additional HTML code here -->
<div id="content"></div>

CSS

#content {background-color:#fff;}
.navwhite {color:#fff;}
.navblack {color:#000;}

JQuery

$(document).ready(function() {
    $('nav>ul>li>a').addClass("navwhite");
});

$(window).scroll(function() {
    var offsetDiv = $('div#content').offset().top;
    var offsetNav = $('#link').offset().top;

    if (offsetDiv <= offsetNav){
        $('nav>ul>li>a').removeClass("navwhite").addClass("navblack");
    }
    else {
        $('nav>ul>li>a').removeClass("navblack").addClass("navwhite");
    }
});

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