Math.ceil function returns the smallest integer greater than or equal to its numeric argument.
You can use this function as :
Math.ceil(number)
where number is the number.
The return value is an integer value equal to the smallest integer greater than or equal to its numeric argument.
Example
<html> <body> <script language="JavaScript"> <!-- function CalculateResult(){ var Number1=document.form1.txtNumber1.value; var result = Math.ceil(Number1); document.form1.answer.value = result; } --> </script> <form name=form1> Enter number: <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>