JavaScript Global property: NaN
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The JavaScript
Global
NaN property returns NaN (i.e. ‘not a number’).
It
has the following syntax:
NaN
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
table,td,tr,th,caption {border: thin solid black; border-collapse: collapse;}
</style>
</head>
<body>
<table >
<tr><th>Global property</th><th>Value returned</th></tr>
<tr><td>'infinity'</td><td id="x1"></td></tr>
<tr><td>'not a number'</td><td id="x2"></td></tr>
<tr><td>'not defined'</td><td id="x3"></td></tr>
</table>
<script id="element">
document.getElementById("x1").innerHTML = Infinity;
document.getElementById("x2").innerHTML = NaN;
document.getElementById("x3").innerHTML = undefined;
</script>
</body>
</html>
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