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<!DOCTYPE html> <html> <body> <p>Math constants are E, PI, SQR2, SQR1_2, LN2, LN10, LOG2E, LOG10E</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("demo").innerHTML = Math.E + "<br>" + Math.PI + "<br>" + Math.SQRT2 + "<br>" + Math.SQRT1_2 + "<br>" + Math.LN2 + "<br>" + Math.LN10 + "<br>" + Math.LOG2E + "<br>" + Math.LOG10E + "<br>"; } </script> </body> </html>