This method returns the smallest integer greater than or equal to the number..
number.ceil();
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ alert( "Math.ceil(4.1) : " + Math.ceil(4.1) ); alert( "(4.1).ceil() : " + (4.1).ceil() ); alert( "(-4.1).ceil() : " + (-4.1).ceil() ); } </script> </head> <body> <p>Click the button to see the result.</p> <br /> <br /> <input type="button" value="Result" onclick="showResult();"/> </body> </html>
To understand it in better way you can Try it yourself.
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