RonTheOld RonTheOld - 1 year ago 153
CSS Question

Navbar to scroll to position after click

Hi guys so i am trying to do some js work and learn and i wanted to create a simple navbar so when the user clicks on it , it will take them to that section of the screen, which is all on one page, however the way i have done it seems very long and bad and i was wondering if there is an easier way to do it? or maybe a library that does it for you etc. If anyone could show me a tutorial or something that could help

Fiddle

html:

<nav class="navbar navbar-default" data-spy="affix" data-offset-top="10">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="#a">a</a></li>
<li><a href="#b">b</a></li>
<li><a href="#c">c</a></li>
<li><a href="#d">d</a></li>
</ul>
</div>
<!--/.nav-collapse -->
</div>
</nav>

<div id="a"></div>
<div id="b"></div>
<div id="c"></div>
<div id="d"></div>


JS:

$(document).ready(function () {
$(document).on("scroll", onScroll);

//smoothscroll
$('a[href^="#"]').on('click', function (e) {
e.preventDefault();
$(document).off("scroll");

$('a').each(function () {
$(this).removeClass('active');
})
$(this).addClass('active');

var target = this.hash,
menu = target;
$target = $(target);
$('html, body').stop().animate({
'scrollTop': $target.offset().top+2
}, 500, 'swing', function () {
window.location.hash = target;
$(document).on("scroll", onScroll);
});
});
});

function onScroll(event){
var scrollPos = $(document).scrollTop();
$('#navbar a').each(function () {
var currLink = $(this);
var refElement = $(currLink.attr("href"));
if (refElement.position().top <= scrollPos && refElement.position().top + refElement.height() > scrollPos) {
$('#navbarr ul li a').removeClass("active");
currLink.addClass("active");
}
else{
currLink.removeClass("active");
}
});
}


css:

affix {
top: 0;
width: 100%
}


.affix + .section {
margin-top: 68px;
}

.navbar {
margin-bottom: 0px;
left: 0;
top: 0;
width: 100%;
list-style: none;
height: 70px;
z-index: 1
}

.navbar-nav {
float: none;
margin: 0;
text-align: center
}

.navbar-nav>li {
float: none;
display: inline-block
}

.navbar-nav>li>a {
line-height: 38px
}

.navbar-nav>li>a.active {
background-color: #E7E7E7
}

.navbar-default .navbar-nav>li>a:hover, .navbar-default .navbar-nav>li>a:focus {
color: #333333;
background-color: #E7E7E7
}

.navbar-toggle {
background-color: #000000;
background-image: none;
border-radius: 4px;
float: right;
margin-bottom: 8px;
margin-right: 15px;
margin-top: 18px;
padding: 9px 10px;
position: relative
}

.navbar-inverse .navbar-toggle .icon-bar {
background-color: #2DCC70
}

.navbar-default .navbar-toggle:hover, .navbar-default .navbar-toggle:focus {
background-color: #000000
}

.navbar-inverse .navbar-collapse, .navbar-inverse .navbar-form {
border-color: transparent
}

#a{
height: 700px;
background-color: Red;
}

#b{
height: 700px;
background-color: blue;
}

#c{
height: 700px;
background-color: yellow;
}

#d{
height: 700px;
background-color: black;
}

Answer Source

You should be able to use this code snippet to smoothly scroll to the desired element on link click:

$("#navbar a").click(function(event) {
    event.preventDefault();

    $('html, body').animate({
        scrollTop: $("#elementtoScrollToID").offset().top
    }, 2000);
});

jQuery scroll to element

Working example: https://jsfiddle.net/345jpqwo

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