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<title>JS Number Data Types</title>
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<pre> <!-- Use pre element for work document.writeln() method -->
<script type="text/javascript">
var num1 = 5; // Numeric integer value
var num2 = 10.5; // Numeric float value
var num3 = -30.47; // Negative numeric float value
var num4 = 5E4; // 5 x 10 Powers of 4 = 50000
var num5 = 5E-4 // 5 x 10 Powers of -4 = -50000
var num6 = 10 / 0; // Number divide by zero, result is: Infinity
var num7 = 10 / -0; // Number divide by negative zero, result is: -Infinity
var num8 = 10, num9 = 12.5; // Multiple variable declare and initialize
document.writeln('num1: ' + num1);
document.writeln('num2: ' + num2);
document.writeln('num3: ' + num3);
document.writeln('num4: ' + num4);
document.writeln('num5: ' + num5);
document.writeln('num6: ' + num6);
document.writeln('num7: ' + num7);
document.writeln('num8: ' + num8);
document.writeln('num9: ' + num9);
</script>
</pre>
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