JavaScript Tutorial JavaScript References

JavaScript - Math.round() Method



The JavaScript Math.round() method returns an integral value that is nearest to the argument value. In halfway cases, the argument is rounded in the direction of +∞.

Syntax

Math.round(x)

Parameters

x Specify a value to round.

Return Value

Returns an integral value by rounding up the x to the nearest integral value.

Example:

In the example below, Math.round() method is used to round the given number.

var txt;

txt = "Math.round(10.2) = " + Math.round(10.2) + "<br>";
txt = txt + "Math.round(10.5) = " + Math.round(10.5) + "<br>";
txt = txt + "Math.round(10.8) = " + Math.round(10.8) + "<br>";
txt = txt + "Math.round(-5.2) = " + Math.round(-5.2) + "<br>";
txt = txt + "Math.round(-5.5) = " + Math.round(-5.5) + "<br>";
txt = txt + "Math.round(-5.8) = " + Math.round(-5.8) + "<br>";

The output (value of txt) after running above script will be:

Math.round(10.2) = 10
Math.round(10.5) = 11
Math.round(10.8) = 11
Math.round(-5.2) = -5
Math.round(-5.5) = -5
Math.round(-5.8) = -6

❮ JavaScript - Math Object

5