Fixed Positioning Div to Stay at the Top while Scrolling

Currently, I have successfully implemented the functionality to stick the div to the top once it scrolls down by 320px. However, I am curious if there is an alternative approach to achieving this effect. Below is the code snippet I am using:

jQuery(function($) {
    function fixDiv() {
        if ($(window).scrollTop() > 320) { 
            $('#navwrap').css({ 'position': 'fixed', 'top': '0', 'width': '100%' }); 
        }
        else {
            $('#navwrap').css({ 'position': 'static', 'top': 'auto', 'width': '100%' });
        }
    }
    $(window).scroll(fixDiv);
    fix5iv();
});

The current implementation works fine, but the issue arises when the height of other preceding divs varies, making relying on the fixed 320px problematic. Is there a way to achieve this without using 

if ($(window).scrollTop() > 320)
, so that it fades in at the top after scrolling past the div #navwrap?

javascriptjquerycsshtml

Answer №1

Consider utilizing the offset().top property of the #navwrap element for fixing its position on the webpage, irrespective of its initial placement. Here is a sample code snippet to achieve this:

function fixDiv() {
    var $div = $("#navwrap");
    if ($(window).scrollTop() > $div.data("top")) { 
        $div.css({'position': 'fixed', 'top': '0', 'width': '100%'}); 
    }
    else {
        $div.css({'position': 'static', 'top': 'auto', 'width': '100%'});
    }
}

$("#navwrap").data("top", $("#navwrap").offset().top); // set original position on load
$(window).scroll(fixDiv);

Check out this example fiddle for reference.

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