javascript - Changing bootstrap navbar scroll effects -


i making bootstrap navbar on scroll change background color red jquery , not work please.

html code

<header class="navbar navbar-default navbar-fixed-top" style="background-color:transparent; border-color:#e74c3c;">       <div class="navbar-brand" style="color:white;">podlle</div>       <div class="nabar-item">          <a style="color:white;" href="#"<div class="navbar-text">sign up</div></a>          <a style="color:white;" href="#"<div class="navbar-text">log in</div></a>       </div>

jquery code

<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.4.js"> $(document).scroll(function(){   $(".navbar").css("background-color" , "red");   })

please , thanks

you need wait document exist (dom ready) , whatever it. jquery, can using shortcut $(callbackfuncion).

the following example code i've wrote print console when page scrolls , update element class nav-bar have red background:

$(function () { // wait domready   $(document).on('scroll', function () {     console.log("scrolling.");     $('.nav-bar').css('background-color', 'red');   }); });

this full sample code working: http://jsfiddle.net/xa8doyb4/


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