Native Javascript exercises 003

index.html

<header>
	<h1>Native Javascript exercises</h1>
</header>
<div class="slide">
	<div class="slide-content">
		<h2 id="change-text">Slide1</h2>
	</div>
	<div class="tool-bar">
		<div class="nav">
			<div id="prev">◀︎</div>
			<div id="next">▶︎</div>
		</div>
	</div>
</div>

native-javascript-exercises-003.markdown

Native Javascript exercises 003

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A Pen by akira kanno on CodePen.

License.

script.js

var slideTxt = ['Slide1','Slide2','Slide3','Slide4','Slide5'];
var current = 0;
var changeText = function(num){
	if(current + num >= 0 && current + num < slideTxt.length){
		current += num;
		document.getElementById('change-text').textContent = slideTxt[current];
	}
};

document.getElementById('prev').onclick = function(){
	changeText(-1);
};

document.getElementById('next').onclick = function(){
	changeText(1);
};

style.css

header{
	width: 100%;
	height: 80px;
	background: #000;
	color: #fff;
	text-align: center;
	line-height: 80px;
}

.slide{
	width: 720px;
	margin: 20px auto;
	border: 1px solid #000;
	background: #000;
}

.slide-content{
	height: 450px;
	background: #fff;
	position: relative;
}

.slide-content h2{
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
}

.tool-bar{
	height: 50px;
	overflow: hidden;
	text-align: center;
	color: #fff;
}

.nav{
	display: inline-block;
	line-height: 50px;
}

#prev,
#next{
	float: left;
	width: 40px;
	height: 40px;
	cursor: pointer;
}