use jquery to build navbar

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use jquery to build navbar

example1

https://codepen.io/jmkulakowski/pen/JXMmVx use bootstrap and jquery

js

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// Add some space at the top to accomodate fixed menu
accountForFixedMenu(0.5);
// Enable smooth scroll when navigating to various sections
// Change nav from transparent to white on scroll
navDynamicStyles(100);
// Add fade effect on page scroll to feature image and highlight main text
fadeFeatureImgOnScroll(100, 1);
 
/*-- Parallax Effect --*/
// Target the background element to which effect will be applied
var jumbotron = document.querySelector('.jumbotron');
var container = jumbotron.children[0];
var parallaxBg = container.children[0];
function parallax(){
 var scrolltop = window.pageYOffset; // get number of pixels document has scrolled vertically 
  parallaxBg.style.top = scrolltop * 0.2 + 'px'; // move parallaxBg at 20% of scroll rate
}
 
// Attach the effect to the window scroll
window.addEventListener('scroll', function(){ // on page scroll
 requestAnimationFrame(parallax); // call parallax() on next available screen paint
}, false) 
/** -----------------------------------------------------------------
* Function Definitions
-------------------------------------------------------------------*/
// Add an event listener to any element
/*
 * When calling this function, make sure to enclose the element and listner
 * tags in quotes - i.e. addListener(myElement, "onload", doThisFunction) 
 */
function addListener(elementTag, listener, func) {
  var element = document.querySelectorAll(elementTag);
  for (i = 0; i < element.length; i++) {
    element[i].addEventListener(listener, func, false);
  }
}
function accountForFixedMenu(factor) { // factor from 0 - 1 (% to offset)
  var jumbotron = document.querySelector(".jumbotron");
  var navbar = document.querySelector(".navbar");
  // Add navbar height + percentage of jumbotron' bottom padding
  var targetTopPadding = Number(navbar.offsetHeight) +
    Number($(jumbotron).css("padding-bottom").replace("px", "") * factor);
  // Set top padding of jumbotron
  jumbotron.style.paddingTop = targetTopPadding + "px";
}
function navDynamicStyles(buffer) {
  $(window).scroll(function(i) {
    var scrollDistance = $(window).scrollTop(); // How far window id from top
    // Reference the navbar elements
    var navbar = jQuery('.navbar');
    var brandImage = jQuery('.navbar-brand > img');
    var siteTitle = jQuery('.navbar-brand p');
    var navLinks = jQuery('.navbar-default .navbar-nav>li>a');
    var navDropMenu = jQuery('.navbar-default .navbar-collapse, .navbar-default .navbar-form');
    /* -----------------------------
    --   Scrolled Nav Settings    --
    ------------------------------*/
    // If the window is scrolled beyond the buffer
    if (scrollDistance > buffer) {
      navbar.css({
        backgroundColor: "#fff",
        background: "linear-gradient(#fff, #f8f8f8)",
        background: "-webkit-linear-gradient(#fff, #f8f8f8)",
        background: "-o-linear-gradient(#fff, #f8f8f8)",
        background: "-moz-linear-gradient(#fff, #f8f8f8)"
      });
      brandImage.css({
        background: "none",
        boxShadow: "none"
      });
      siteTitle.css({
        color: "#777",
        padding:"10px"
      });
      siteTitle.hover(
        function() {
          jQuery(this).css("color", "#aaa");
        },
        function() {
          jQuery(this).css("color", "#777");
        });
      navLinks.css({
        color: "#777",
        padding:"20px"
      });
      navLinks.hover(
        function() {
          jQuery(this).css("color", "#aaa");
        },
        function() {
          jQuery(this).css("color", "#777");
        });
      navDropMenu.css({
        borderColor: "#e7e7e7"
      });
    } // END if
    /* -----------------------------
    --  Transparent Nav Settings  --
    ------------------------------*/
    // If the window is scrolled to the top of the page
    else if (scrollDistance < buffer) {
      navbar.css({
        background: "none"
      });
      brandImage.css({
        backgroundColor: "#ccc",
        boxShadow: "0 0 3px #ccc"
      });
      siteTitle.css({
        color: "#ccc",
        padding:"20px"
      });
      siteTitle.hover(
        function() {
          jQuery(this).css("color", "#eee");
        },
        function() {
          jQuery(this).css("color", "#ccc");
        });
      navLinks.css({
        color: "#ccc",
        padding:"30px"
      });
      navLinks.hover(
        function() {
          jQuery(this).css("color", "#eee");
        },
        function() {
          jQuery(this).css("color", "#ccc");
        });
      navDropMenu.css({
        borderColor: "#444"
      });
    } // END else if
  });
}
function fadeFeatureImgOnScroll(scrollDistance, parallaxFactor) {
  $(window).scroll(function(i) {
    // Scroll distance from window top
    var scrollVar = $(window).scrollTop();
    // The featured image
    var profileImage = $('.jumbotron .container').children('.profile-img');
    // The heading Text
    var headText = $('.jumbotron .container h1');
    var subHeadText = $('.jumbotron .container h4');
    profileImage.css({
      'top': parallaxFactor * scrollVar,
      'opacity': (scrollDistance - scrollVar) / 100
    });
    // Add soft transition to head text
    headText.addClass('soft-transition');
    // If the window is scrolled beyond the scrollDistance
    // and featured image is invisible
    if (scrollVar > scrollDistance) {
      // Add a text hightlight to the head text
      headText.css({
        textShadow: "0 0 10px #ccc"
      });
      subHeadText.css({
        textShadow: "0 0 10px #ccc"
      });
    } else {
      // Otherwise, remove the effect
      headText.css({
        textShadow: "none"
      });
      subHeadText.css({
        textShadow: "none"
      });
    }
  });
}

css

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.soft-transition {
  transition: all 0.25s ease-out;
  -webkit-transition: all 0.25s ease-out;
  -moz-transition: all 0.25s ease-out;
}
.container {
  max-width: 1024px;
}
.container-fluid {
  margin: 0;
  padding: 0;
}
/*-- Navbar settings --*/
.navbar {
  transition: all 0.5s ease-out;
}
.navbar {
  background: none;
  border: none;
}
.navbar-brand {
  padding: 10px; /* Allows more space for brand logo to expand */
}
.navbar-brand > img {
  max-height: 100%;
  display: inline-block;
  margin-right: 2px;
  background-color: #ccc;
  box-shadow: 0 0 3px #ccc;
}
.navbar-brand p {
  display: inline-block;
  color: #ccc;
  padding:20px;
}
.navbar-brand p:hover {
  color: #eee;
}
.navbar-default .navbar-nav>li>a {
  color: #ccc;
  padding:30px;
}
.navbar-default .navbar-nav>li>a:hover {
  color: #eee;
}
.navbar-default .navbar-collapse, .navbar-default .navbar-form {
  border-color: #444;
}
/*-- Mobile nav --*/
.navbar-default .navbar-toggle, .navbar-default .navbar-toggle:focus, .navbar-default .navbar-toggle:hover {
  background: none;
  border: none;
} 
/*-- Jumbotron settings --*/
.jumbotron {
  position: relative;
  margin: 0;
  text-align: center;
  color: #fff;
  background-color: #333;
  overflow: hidden;
}
.jumbotron .container .profile-img, .jumbotron .container h1, .jumbotron .container h4, .jumbotron .container hr, .jumbotron .container a {
  position: relative;
}
.jumbotron .parallax-img {
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
}
.jumbotron .profile-img {
  width: 25%;
  margin: 20px 0;
  border-radius: 100%;
  border: 8px solid #eee;
  -moz-box-shadow:    0px 0px 20px #ccc;
  -webkit-box-shadow: 0px 0px 20px #ccc;
  box-shadow:         0px 0px 20px #ccc;
  filter: hue-rotate(30deg);
  -webkit-filter: hue-rotate(30deg);
  -moz-filter: hue-rotate(30deg);
  -o-filter: hue-rotate(30deg);
/*
  filter: saturate(0);
  -webkit-filter: saturate(0);
  -moz-filter: saturate(0);
  -o-filter: saturate(0);
*/
}
.jumbotron hr {
  width: 50%;
}
.jumbotron h4 {
    max-width: 50%;
    margin: 0 auto 20px;
}
/*-- Custom Buttons --*/
.btn:focus,.btn:active {  /* Prevent clue outline around boostrap buttons */
   outline: none !important;
}
.btn-clear-light, .btn-clear-light:visited {
  color: #fff;
  background: none;
  border: 1px solid #fff;
  border-radius: 0;
}
.btn-clear-light:hover {
  color: #333;
  background: #eee;
}
.btn-clear-light:active, .btn-clear-light:focus {
  color: #333;
  background-color: #ddd;
}
/* Flaired edges, by Tomas Theunissen */
hr.style-seven {
    height: 30px;
    border-style: solid;
    border-color: #eee;
    border-width: 1px 0 0 0;
    border-radius: 20px;
}
hr.style-seven:before { /* Not really supposed to work, but does */
    display: block;
    content: "";
    height: 30px;
    margin-top: -31px;
    border-style: solid;
    border-color: #eee;
    border-width: 0 0 1px 0;
    border-radius: 20px;
}
/*-----------------
* Mobile Settings *
-----------------*/
/* Make sure parallax image fills jumbotron */
@media(max-width: 1200px) {
  .jumbotron .parallax-img {
      width: auto;
      height: 100%;
  }
}
/*-- iPhone 6+ --*/
@media(max-width: 736px) {
  /* Expand feature image size */
  .jumbotron .profile-img {
    width: 66%;
  }

html

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<div class="jumbotron">
  <div class="container">
    <img src="http://jimkulakowski.com/web-design/img/parallax-backgrounds/space.jpg" alt="Image of mac laptop on a desk" class="parallax-img">
    <img src="http://jimkulakowski.com/web-design/img/jim-at-piano.png" alt="jim at piano" class="profile-img">
    <h1>Jim Kulakowski</h1>
    <hr class="style-seven" />
    <h4>Web Designer - Graphic Artist - User Interface Designer - Interactive Media Designer</h4>
    <p>
      <a class="btn btn-lg btn-clear-light soft-transition" href="https://twitter.com/j_kula" role="button" target="_blank"><i class="fa fa-twitter"> Twitter</i></a>
      <a class="btn btn-lg btn-clear-light soft-transition" href="https://github.com/jmkulakowski" role="button" target="_blank"><i class="fa fa-github-square"> Github</i></a>
      <a class="btn btn-lg btn-clear-light soft-transition" href="https://www.linkedin.com/in/jkulakowski
    " role="button" target="_blank"><i class="fa fa-linkedin-square"> LinkedIn</i></a>
    </p>
  </div>
</div>
<div class="container-fluid">
  <!-- Fixed Navbar -->
  <nav class="navbar navbar-default navbar-fixed-top">
    <div class="container-fluid">
      <div class="container">
        <!-- Mobile menu button -->
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
              <span class="sr-only">Toggle navigation</span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
              <span class="icon-bar"></span>
            </button>
        <!-- Site Branding -->
        <div class="navbar-header">
          <a class="navbar-brand" href="#">
            <img src="http://jimkulakowski.com/web-design/img/jk-logo-space.png" alt="Jim Kulakowski Space Logo" class="site-logo">
            <p>Jim Kulakowski</p>
          </a>
        </div>
        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse navbar-right" id="bs-example-navbar-collapse-1">
          <ul class="nav navbar-nav">
            <li><a href="#portfolio">Portfolio</a></li>
            <li><a href="#about">About</a></li>
            <li><a href="#skills">Skills</a></li>
            <li><a href="#contact">Contact</a></li>
          </ul>
        </div>
        <!-- END .navbar-collapse -->
      </div>
      <!-- END .container -->
    </div>
    <!-- END .container-fluid -->
  </nav>
  </div>

example2

https://codepen.io/j_holtslander/pen/waQQYm

1
<link href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css" rel="stylesheet">

html

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<nav class="navbar navbar-default" role="navigation" >
    <div class="container-fluid">
    <div class="navbar-header">
        <button type="button" class="navbar-toggle" data-toggle="collapse"
                data-target="#example-navbar-collapse">
            <span class="sr-only">切换导航</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="#">菜鸟教程</a>
    </div>
    <div class="collapse navbar-collapse" id="example-navbar-collapse">
        <ul class="nav navbar-nav">
            <li><a href="#">iOS</a></li>
            <li><a href="#">SVN</a></li>
            <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                    Java <b class="caret"></b>
                </a>
                <ul class="dropdown-menu">
                    <li><a href="#">jmeter</a></li>
                    <li><a href="#">EJB</a></li>
                    <li><a href="#">Jasper Report</a></li>
                    <li class="divider"></li>
                    <li><a href="#">分离的链接</a></li>
                    <li class="divider"></li>
                    <li><a href="#">另一个分离的链接</a></li>
                </ul>
            </li>
        </ul>
    </div>
    </div>
</nav>
 <div id="myCarousel" class="carousel slide">
        <!-- Indicators -->
        <ol class="carousel-indicators">
            <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
            <li data-target="#myCarousel" data-slide-to="1"></li>
            <li data-target="#myCarousel" data-slide-to="2"></li>
        </ol>
        <!-- Wrapper for Slides -->
        <div class="carousel-inner">
            <div class="item active">
                <!-- Set the first background image using inline CSS below. -->
                <div class="fill" style="background-image:url('http://www.marchettidesign.net/demo/optimized-bootstrap/code.jpg');"></div>
                <div class="carousel-caption">
                     <h2 class="animated fadeInLeft">Caption Animation</h2>
                     <p class="animated fadeInUp">Lorem ipsum dolor sit amet consectetur adipisicing elit</p>
                     <p class="animated fadeInUp"><a href="#" class="btn btn-transparent btn-rounded btn-large">Learn More</a></p>
                </div>
            </div>
            <div class="item">
                <!-- Set the second background image using inline CSS below. -->
                <div class="fill" style="background-image:url('http://www.marchettidesign.net/demo/optimized-bootstrap/conference.jpg');"></div>
                <div class="carousel-caption">
                     <h2 class="animated fadeInDown">Caption Animation</h2>
                     <p class="animated fadeInUp">Lorem ipsum dolor sit amet consectetur adipisicing elit</p>
                     <p class="animated fadeInUp"><a href="#" class="btn btn-transparent btn-rounded btn-large">Learn More</a></p>
                </div>
            </div>
            <div class="item">
                <!-- Set the third background image using inline CSS below. -->
                <div class="fill" style="background-image:url('http://www.marchettidesign.net/demo/optimized-bootstrap/campus.jpg');"></div>
                <div class="carousel-caption">
                     <h2 class="animated fadeInRight">Caption Animation</h2>
                     <p class="animated fadeInRight">Lorem ipsum dolor sit amet consectetur adipisicing elit</p>
                     <p class="animated fadeInRight"><a href="#" class="btn btn-transparent btn-rounded btn-large">Learn More</a></p>
                </div>
            </div>
        </div>
        <!-- Controls -->
        <a class="left carousel-control" href="#myCarousel" data-slide="prev">
            <span class="icon-prev"></span>
        </a>
        <a class="right carousel-control" href="#myCarousel" data-slide="next">
            <span class="icon-next"></span>
        </a>
    </div>

css

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.carousel,
.item {
    height: 620px;
}
/* Make sure parallax image fills jumbotron */
@media(max-width: 1200px) {
 .carousel,
.item {
    height: 620px;
}
}
/*-- iPhone 6+ --*/
@media(max-width: 736px) {
  /* Expand feature image size */
.carousel,
.item {
    height: 580px;
   
}
}
.carousel-inner {
  height: 100%;
  background: #000;
}
.carousel-caption{padding-bottom:80px;}
.carousel-caption h2{font-size: 50px;}
.carousel-caption p{padding: 10px;}
/* Background images are set within the HTML using inline CSS, not here */
.fill {
    width: 100%;
    height: 100%;
    background-position: center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
    opacity:0.6;
}
/**
 * Button
 */
.btn-transparent {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}
.btn-transparent:hover {
  background-color: #fff;
}
.btn-rounded {
  border-radius: 70px;
}
.btn-large {
  padding: 11px 45px;
  font-size: 18px;
}
/**
 * Change animation duration
 */
.animated {
  -webkit-animation-duration: 1.5s;
  animation-duration: 1.5s;
}
@-webkit-keyframes fadeInRight {
  from {
    opacity: 0;
    -webkit-transform: translate3d(100px, 0, 0);
    transform: translate3d(100px, 0, 0);
  }
  to {
    opacity: 1;
    -webkit-transform: none;
    transform: none;
  }
}
@keyframes fadeInRight {
  from {
    opacity: 0;
    -webkit-transform: translate3d(100px, 0, 0);
    transform: translate3d(100px, 0, 0);
  }
  to {
    opacity: 1;
    -webkit-transform: none;
    transform: none;
  }
}
.fadeInRight {
  -webkit-animation-name: fadeInRight;
  animation-name: fadeInRight;
}
.navbar.navbar-default{
   margin-bottom: 0px;
   background-color:#fff;
}

js

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var  mn = $(".navbar.navbar-default");
var  mns = "navbar-fixed-top";
var  hdr = $('.carousel').height(); 
$(window).scroll(function() {
  if( $(this).scrollTop() > (hdr+80) ) {
    mn.addClass(mns);
  } else {
    mn.removeClass(mns);
  }
});

example 3: toggle navbar when you scroll up or the down pages

js

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jQuery(document).ready(function ($) {
var  mn = $(".iu");
var  mns = $(".yu");
var mnn= $(".pu");
var  hdr = $('.yt').height(); 
var hdu = $('.yi').height();
var hde = $(document).scrollTop();
$(window).scroll(function() {
    var hdd = $(document).scrollTop();
  if( hdd < hde ) { 
    mn.fadeIn(500);
    mns.fadeOut(500);
    mnn.fadeOut(500);
}
else if(hdd>hde){
    if (hdd>(hdr+hdu)) {
    mn.fadeOut(500);
    mnn.fadeIn(500);
    mns.fadeOut(500);
    }else if(hdd>hdr){
    mn.fadeOut(500);
    mns.fadeIn(500);
    mnn.fadeOut(500);
    } else{
    mn.fadeOut(500);
    mns.fadeIn(500);
    mnn.fadeOut(500);
    }
  }
  hde=hdd;
});
})

html

3 navbar like this

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<div class="container-fluid">
  <nav class="iu navbar navbar-default navbar-fixed-top" role="navigation" >
    <div class="container-fluid">
    <div class="navbar-header">
        <button type="button" class="navbar-toggle" data-toggle="collapse"
                data-target="#example-navbar-collapse">
            <span class="sr-only">切换导航</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="#">菜鸟教程</a>
    </div>
    <div class="collapse navbar-collapse" id="example-navbar-collapse">
        <ul class="nav navbar-nav">
            <li class="active"><a href="#">iOS</a></li>
            <li><a href="#">SVN</a></li>
            <li class="dropdown">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                    Java <b class="caret"></b>
                </a>
                <ul class="dropdown-menu">
                    <li><a href="#">jmeter</a></li>
                    <li><a href="#">EJB</a></li>
                    <li><a href="#">Jasper Report</a></li>
                    <li class="divider"></li>
                    <li><a href="#">分离的链接</a></li>
                    <li class="divider"></li>
                    <li><a href="#">另一个分离的链接</a></li>
                </ul>
            </li>
        </ul>
    </div>
    </div>
</nav>
<nav class="yu"></nav>
<nav class="pu"></nav>
</div>
<div class="yt container-fluid">
</div>
<div class="yi container-fluid">
</div>
<div class="yo container-fluid">
</div>

css

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.yu{display:none;}
.yt{height: 300px;
background-color: #999;}
.yi{height: 500px;
background-color: #111;}
.yo{height: 1500px;
background-color: #222;}
.pu{display:none;}