Math.ceil() : ceil « Math « JavaScript Tutorial

Syntax

math.ceil(num)

The ceil() method calculates the smallest integer that is greater than or equal to the number passed in as a parameter.

<html>
    <body>
    <title>Example of the ceil() method</title>
    <script language="JavaScript">
    <!--
    function doMath(){
        var inputNum=document.form1.input.value;
        var result = Math.ceil(inputNum);
        document.form1.answer.value = result;
    }
    -->
    </script>
    <form name=form1>
    This example calculates ceiling of the entered number.
    <br><br>
    Enter First Number:
    <input type="text" name="input" size=10>
    <input type="button" value="Calculate" onClick='doMath()'>
    <br>
    The Ceil output is:
    <input type="text" name="answer" size=10>
    </form>
    </body>
    </html>

9.7.ceil
	9.7.1.	Math.ceil()