jQuery Text Slider

index.html

<h1>Here is my take on the text slider from the <a href="https://www.kickstarter.com/discover">kickstarter/discover</a> page</h1>

<div class="wrap">
	<ul id="sentence">
		<li id="first">Here is a </li>
		<ul id="adjList"></ul>
		<li id="last"> statement.</li>
	</ul>
</div>

<button id="stop">Stop</button>
<button id="look">Take a look under the hood <span>(toggle)</span></button>

jQuery Text Slider.markdown

jQuery Text Slider

A simple recreation of the text slider from https://www.kickstarter.com/discover

A Pen by Michael Smart on CodePen.

License.

script.js

////////////////////////////
// Twitter: @mikedevelops
////////////////////////////

// add as many adjectives as you like!
var adjs = ["very cool", "really exciting", " super awesome", "jQuery sliding"],
	sentence = $('#sentence'),
	adjList = $('#adjList'),
	stop = false;

// function to return the most up-to-date
// version of our adjective list
function getList() {
	return $('.adj');
}

// function to build the adjective list
// args: adjective array
function build(arr) {
	for (i=0; i<arr.length; i++) {
		var item = "<li class='adj'>";
		$(adjList).append(item + arr[i] + "</li>");
	}
}

// function to resize adjective list
// args: adjective list item
function resize(el) {
	$(adjList).animate({
		width: $(el).width(),
	}, 200);
}

// function to add slide-in transition
// args: element that needs to slide
function slideIn(el) {
	// duration slide is on screen
	var hold = 1000;
	// resize area to sliding element
	resize($(el));
	// add slide-in class
	$(el).addClass('slide-in');	
	// after 'hold' duration slide-out current item
	// then slide in next item
	setTimeout(function(){
		// check to see if loop should continue
		if (stop === true) {
			stop = false;
			return;
		}
		// slide current element out
		slideOut(el);
		// slide in next element in queue
		slideIn($(el).next());
	}, hold);
}

// function to add slide-out transition
// args: element that needs to slide
function slideOut(el) {
	// remove current class and add slide-out transition
	$(el).removeClass('slide-in').addClass('slide-out');
	// wait for slide tramsition to finish then
	// call 'change' function
	setTimeout(function(){
		change();
	}, 200);
}

// function to re-arrange adjective list
function change() {	
	// store last item index
	var i = adjs.length - 1;
	// detach element that has slide-out class
	// put to the bottom of the list after
	// the last item
	$('.adj:eq(' + i + ')').after($('.slide-out').detach());
	// remove class to send element back to original position
	$('.adj').removeClass('slide-out');
}

// build slider
build(adjs);
// init loop
slideIn(getList()[0]);

$('#stop').click(function(){
	// stop/start loop
	if ($(this).html() === "Start") {
		$(this).html("Stop");
		slideIn(getList()[0]);
	} else {
		stop = true;
		$(this).html("Start");	
	}
});

$('#look').click(function(){
	if (!$(sentence).hasClass('overflow')) {
		$(sentence).addClass('overflow');
	} else {
		$(sentence).removeClass('overflow');
	}
});

scripts

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

style.css

@import url(http://fonts.googleapis.com/css?family=PT+Sans:400,700);

html {
	background: linear-gradient(-134deg, #32DE62 0%, #8CE2A4 100%) no-repeat;
	width: 100%;
	height: 100%;
	font-family: 'PT Sans', Helvetica, Arial, sans-serif;
	font-weight: 200;
	font-size: 30px;
	text-align: center;
	min-width: 500px;
}

h1 {	
	padding: 50px;
	line-height: 1.2em;	
}

a {
	color: #4A90E2;
	text-decoration: none;
}

button {
	margin-top: 25px;
	
	span {
		font-size: .7em;
		font-style: italic;
	}
}

.wrap {
	background: white;
	border-radius: 10px;
	padding: 40px 0;
	margin: 25px 0;
}

#sentence {
	overflow: hidden;
	padding: 20px;
	
	& > li,
	& > ul {
		display: inline;
	}	
}

#adjList {
	overflow: visible !important;
	text-align: left;
	display: inline;
	position: relative;
	height: 16px;
}

.adj {
	white-space: nowrap;
	list-style: none;
	position: absolute;
	line-height: .3em;
	transform: translateY(60px);
}

$speed: .3s;

.slide-in {
	transform: translateY(0);
	transition: $speed;
}

.slide-out {
	transform: translateY(-60px);
	transition: $speed;
}

button {
	cursor: pointer;
	border: none;
	color: white;
	padding: 10px 5px;
	background: none;
	font-weight: normal;
	font-size: 1em;
	border-bottom: 2px solid white;
	margin-right: 30px;
	
	&:last-of-type {
		margin-right: 0;
	}
}

.overflow {
	overflow: visible !important;
	border: 1px solid red;
}

.border {
	border: 1px soild red;
}