‘floor’, ‘ceil’,
‘round’ functions are used to perform rounding on float values.
Function
|
Description
|
Math.floor(number)
|
Get the
floor value of a number.
|
Math.ceil(number)
|
Get the
ceil value of a number.
|
Math.round(number)
|
Round
the number to nearest integer.
|
var a =
Math.floor(5.9); // Return 5
var b =
Math.ceil(5.1); // Return 6
var c =
Math.round(5.4); // Return 5
var d =
Math.round(5.5); // Return 6
round.html
<!DOCTYPE html> <html> <head> <title>rounding example</title> </head> <body> <script type="text/javascript"> var a = Math.floor(5.9); // Return 5 var b = Math.ceil(5.1); // Return 6 var c = Math.round(5.4); // Return 5 var d = Math.round(5.5); // Return 6 document.write("a = " + a + "<br />"); document.write("b = " + b + "<br />"); document.write("c = " + c + "<br />"); document.write("d = " + d + "<br />"); </script> </body> </html>
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