On scrolling navbar, the color isn't changing. How to make it work?

Question

I want to change the color of my navbar after scrolling

I did a similar code to this Changing nav-bar color after scrolling? but it didn't wotk

<script>
  $(function () {
    $(document).scroll(function () {
      var $nav = $(".fixed-top");
      $nav.toggleClass('scrolled', $(this).scrollTop() > $nav.height());
    });
  });
</script>

//The HTML
<nav class="navbar navbar-dark navbar-expand-lg fixed-top">
  <div class="container">
    <a class="navbar-brand my-font" href="#">Site Header</a>
     ......
 </div>
 </nav>

//The css
.fixed-top {
  background-color:#CC3333;
  background-image: none;
  background-repeat: no-repeat;
}

.fixed-top.scrolled {
  color: #FFFFFF;
  transition: background-color 200ms linear;
}

score 1 · Answer 1 · answered Jan 25 '19 at 09:05

Try this. You Only need to Change the Css.

 $(function () {
    $(document).scroll(function () {
      var $nav = $(".fixed-top");
      $nav.toggleClass('scrolled', $(this).scrollTop() > $nav.height());
    });
  });

@import "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/css/bootstrap.min.css";
.fixed-top {
  position:fixed;
  width:100%;
  height:50px;
  background-color:#CC3333;

}

.fixed-top.scrolled {
  background-color: blue;
  transition: background-color 200ms linear;
}

<nav class="navbar navbar-dark navbar-expand-lg fixed-top">
  <div class="container">
    <a class="navbar-brand my-font" href="#">Site Header</a>
     ......
 </div>
 </nav>

<p>
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</p>

score 0 · Accepted Answer · answered Jan 25 '19 at 06:34

You need to change css as you are changing background-color so apply background-color when class added and give position fixed to nav

 $(function () {
    $(document).scroll(function () {
      var $nav = $(".fixed-top");
      $nav.toggleClass('scrolled', $(this).scrollTop() > $nav.height());
    });
  });

body{
  margin:0px;
}

.fixed-top {
  background-color:#CC3333;
  position:fixed;
  left:0;
  right:0;
}

.fixed-top.scrolled {
  background-color: #ffff00;
  transition: background-color 200ms linear;
}
.content{
  min-height:200vh;
  background:#f2f2f2;
  padding-top:30px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<nav class="navbar navbar-dark navbar-expand-lg fixed-top">
  <div class="container">
    <a class="navbar-brand my-font" href="#">Site Header</a>
     ......
 </div>
 </nav>
 <div class="content">
   hiiiiiiiiiiiiiiiiii
 </div>

thank you. it worked, looks like the code was great before as well, i i just linked the jquery. I just don't understand how it couldn't load my internal jquery — Willson Marandi, Jan 26 '19 at 04:48

On scrolling navbar, the color isn't changing. How to make it work?

2 Answers2