My navbar cannot change color on scroll, i am already using this script. please help me

<script>
        $(document).ready(function(){
            $(window).scroll(function() { 
                if ($(document).scrollTop() > 50) { 
                    $(".navbar-fixed-top").css("background-color", "#f8f8f8"); 
                } else {
                $(".navbar-fixed-top").css("background-color", "transparent");
            }
            });
        });
    </script>

i am using bootstrap

My navbar cannot change color on scroll, i am already using this script. please help me

<script>
        $(document).ready(function(){
            $(window).scroll(function() { 
                if ($(document).scrollTop() > 50) { 
                    $(".navbar-fixed-top").css("background-color", "#f8f8f8"); 
                } else {
                $(".navbar-fixed-top").css("background-color", "transparent");
            }
            });
        });
    </script>

i am using bootstrap

• javascript
• css
• twitter-bootstrap

• Can you also add your html? – Jonas Commented Nov 2, 2016 at 8:10

3 Answers 3

Hope this works, you have to use scrollTop() to get vertical scrollbar position and accordingly made changes in your selected div i.e. over-here is .navbar.

$(document).ready(function(){
	$(window).on("scroll",function(){
  	var wn = $(window).scrollTop();
    if(wn > 120){
    	$(".navbar").css("background","rgba(255,0,0,1)");
    }
    else{
    	$(".navbar").css("background","rgba(1,1,1,1)");
    }
  });
});

body{
  height:1600px;
}
.navbar{
  background:rgba(1,1,1,1);
}

<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn./bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn./bootstrap/3.3.7/js/bootstrap.min.js"></script>

<nav class="navbar navbar-fixed-top">
  <div class="container-fluid">
    <div class="navbar-header">
      <a class="navbar-brand" href="#">WebSiteName</a>
    </div>
    <ul class="nav navbar-nav">
      <li class="active"><a href="#">Home</a></li>
      <li><a href="#">Page 1</a></li>
      <li><a href="#">Page 2</a></li> 
      <li><a href="#">Page 3</a></li> 
    </ul>
  </div>
</nav>

I am just curious on why arent you using affix that already es with bootstrap? Here is the link : http://www.w3schools./Bootstrap/bootstrap_affix.asp

in your case change add this line for your nav tag

<nav class="navbar navbar-fixed-top"data-spy="affix" data-offset-top="(scroll value)" >

and css

.affix.navbar{
 background-color: color-you-prefer;
 }

Use the css class for color:

.anycolor {
    background-color: #f8f8f8";
}

and do that with this code :

if ($(window).scrollTop() > 50){
    $('.navigation').addClass( "anycolor");
}
else {
    $('.navigation').removeClass("anycolor");
}