math.exp function in javascript returns e raised to a power.
You can use this like :
Math.exp(number)
where number is a numeric expression representing the power of e.
Note: constant e is Euler’s number, approximately equal to 2.71828 and number is the supplied argument.
<html> <body> <script language="JavaScript"> <!-- function CalculateResult(){ var Number1=document.form1.txtNumber1.value; var result = Math.exp(Number1); document.form1.answer.value = result; } --> </script> <form name=form1> Enter power of e: <input type="text" name="txtNumber1"> <br> <input type="button" value="Calculate" onClick='CalculateResult()'> <br> result : <input type="text" name="answer" size=10> </form> </body> </html>