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ex4.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<h1>Array</h1>
<h2>Syntax</h2>
<p>var road = [ 'HTML' , 'CSS' , 'JavaScript' ];</p>
<script>
var road = ['HTML','CSS','JavaScript'];
</script>
<h2>Get</h2>
<script>
document.write(road[0]+'<br>');
document.write(road[1]+'<br>');
document.write(road[2]+'<br>');
</script>
<h2>Add (3)</h2>
<script>
road.push('Vue','React','Angular');
document.write(road[0]+'<br>');
document.write(road[1]+'<br>');
document.write(road[2]+'<br>');
document.write(road[3]+'<br>');
document.write(road[4]+'<br>');
document.write(road[5]+'<br>');
</script>
<h2>Count</h2>
<script>
document.write(road.length);
</script>
</body>
</html>