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<!DOCTYPE html>
<!--
<html>
<body>
<h2>JavaScript Statements</h2>
<p>Statements are separated by semicolons.</p>
<p>The variables x, y, and z are assigned the values 5, 6, and 11.</p>
<p>Then the value of z is displayed in the paragraph below:</p>
<p id="demo"></p>
<script>
var x, y, z;
x = 5;
y = 6;
z = x + y;
document.getElementById('demo').innerHTML = z;
</script>
</body>
</html> -->
<!--
<html>
<body>
<h2>JavaScript Operators</h2>
<p>JavaScript uses arithmetic operators to compute values (just like algebra).</p>
<p id="demo"></p>
<script>
document.getElementById("demo").innerHTML = (5 + 6) * 10;
</script>
</body>
</html> -->
<!--
<html>
<body>
<h2>JavaScript Expressions</h2>
<p>Expressions compute to values.</p>
<p id="demo"></p>
<script>
var x;
x = 5;
document.getElementById("demo").innerHTML = x * 10;
</script>
</body>
</html> -->
<!--
<!DOCTYPE html>
<html>
<body>
<h2>The var Keyword Creates Variables</h2>
<p id="demo"></p>
<script>
var x, y;
x = 5 + 6;
y = x * 10;
document.getElementById("demo").innerHTML = y;
</script>
</body>
</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>
</html>