JavaScript Math.atan2() Method

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JavaScript Math.atan2() Method

The Math.atan2() method returns the angle in the plane between the positive x-axis and the ray from (0, 0) to the point (x, y), for Math.atan2(y, x).


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<!DOCTYPE html> <html> <body> <script> var result = Math.atan2(4, 2); document.write(result); </script> </body> </html>


Math.atan2(y, x)

Parameter Values

yRequiredThe y coordinate of the point.
xRequiredThe x coordinate of the point.

Return Value

NumberThe arc-tangent of the quotient of its arguments.
The return value will be between -π and π.
The return value is represented in radians.
NaNIf the given value is empty.


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