Using javascript to quickly change the background to a transparent color

I am in the process of designing a header for my website and I would like to make the background transparent automatically when the page loads using JavaScript. So far, I have attempted several methods but none seem to be working as desired. The CSS styles applied in main.css are overriding my attempts. To tackle this issue, I wrote the following script:

$(window).scroll(function(){
    var $top=$(window).scrollTop();
    var $nav = $('.navigation');

    if($top>80){
        $nav.css({
            'background-color':'#E6C0E9', 
            'position':'fixed',
            'opacity':'0.9'
        });
    }
    else{
        $nav.css({
            'background-color':'Transparent',
            'position':'absolute'
        });
    }
});

Although the script successfully changes the background to transparent after scrolling down 80px and then back up, I require it to change immediately upon page load.

Answer №1

The issue lies within the if statement in your code. It seems that the opacity is only being applied when the element is 80 pixels away from the top. Try removing if($top>80) and set the element to be transparent upon loading instead.

$( document ).ready(function() {
    $nav.css({
        'position':'fixed',
        'background-color':'Transparent'   
    })
});

You could also handle this with CSS from the beginning, eliminating the need for JavaScript.

Create a new stylesheet specifically for this page and define the navigation's styles:

.navigation {
    'position':'fixed',
    'background-color':'Transparent'
}

Answer №2

$(window).scroll(function() {
    var $top = $(window).scrollTop(),
        $nav = $(".navigation");

    if ($top >= 80) {
        $nav.addClass("scroll");
    } else {
        $nav.removeClass("scroll");
    }
});

To style the navigation bar, add the following CSS:

.navigation {
    background: transparent;
    position: absolute;
}   

.navigation.scroll {
    background-color: #E6C0E9;
    position: fixed;
    opacity: 0.9;
}

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