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<!DOCTYPE html>
<html>
<body>
​
<h2>JavaScript is Case Sensitive</h2>
​
<p>Try change lastName to lastname.</p>
​
<p id="demo"></p>
​
<script>
var lastname, lastName;
lastName = "Doe";
lastname = "Peterson";
document.getElementById("demo").innerHTML = lastName;
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_syntax_case by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:28:11 GMT -->
</html>
​
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