JavaScript Tutorial/Math/PI
Math.PI
The PI property of the Math object is used to get the constant PI.
This is approximately 3.14159.
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<body> <script language="JavaScript"> </script> <form name=form1> The Approximate value of PI is: <input type="text" name="answer" size=20> <input type="button" value="Calculate" onClick="doMath()">
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The value of the constant PI: Math.PI
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Use Math.PI to do calculation
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<html> <head> <title>Find the area and circumference of a circle</title> <script type="text/javascript" language="javascript">
</script> </head> <body onload="FindArea()"> </body> </html></source>
