Math Object Properties
Property 
Description 
E 
Returns Euler's number (approx. 2.718) 
LN2 
Returns the natural logarithm of 2 (approx. 0.693) 
LN10 
Returns the natural logarithm of 10 (approx. 2.302) 
LOG2E 
Returns the base2 logarithm of E (approx. 1.442) 
LOG10E 
Returns the base10 logarithm of E (approx. 0.434) 
PI 
Returns PI (approx. 3.14159) 
SQRT1_2 
Returns the square root of 1/2 (approx. 0.707) 
SQRT2 
Returns the square root of 2 (approx. 1.414) 
Math Object Methods
Method 
Description 
abs(x) 
Returns the absolute value of x 
acos(x) 
Returns the arccosine of x, in radians 
asin(x) 
Returns the arcsine of x, in radians 
atan(x) 
Returns the arctangent of x as a numeric value between
PI/2 and PI/2 radians 
atan2(y,x) 
Returns the arctangent of the quotient of its arguments 
ceil(x) 
Returns x, rounded upwards to the
nearest integer 
cos(x) 
Returns the cosine of x (x is in radians) 
exp(x) 
Returns the value of E^{x} 
floor(x) 
Returns x, rounded downwards to the
nearest integer 
log(x) 
Returns the natural logarithm (base E) of x 
max(x,y,z,...,n) 
Returns the number with the highest value 
min(x,y,z,...,n) 
Returns the number with the lowest value 
pow(x,y) 
Returns the value of x to the power of y 
random() 
Returns a random number between 0 and 1 
round(x) 
Rounds x to the nearest integer 
sin(x) 
Returns the sine of x (x is in radians) 
sqrt(x) 
Returns the square root of x 
tan(x) 
Returns the tangent of an angle 
Examplevar x=Math.PI;
var y=Math.sqrt(16); Create Random Numbers: document.write(Math.random());
document.write(Math.floor(Math.random()*11));
