Posted in jquery
4162
1:45 am, June 30, 2020
 

add a class or remove it based on window scroll location

if you inspect the header div you will see a class added to it when scrolled down, i have added additional margins to it so you can still see it even when scrolled.

then you add a fixed property to make it stick

HTML

<div class='header'>This is the .header div</div>

CSS

.header {
background:#000;
color:#FFF;
padding:10px;
}
.header-stick {
font-weight:bold;
}

Javascript

$(window).scroll(function() {
  if ($(document).scrollTop() > 50) {
    $('.header').addClass('header-stick');
  } else {
    $('.header').removeClass('header-stick');
  }
});
This is the .header div

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initial

The initial CSS keyword applies the initial (or default) value of a property to an element. It can be applied to any CSS property. This includes the CSS shorthand all, with which initial can be used to restore all CSS properties to their initial state.
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