The Math Object
- Unlike other objects, the Math object has no constructor.
- The Math object is static.
- All methods and properties can be used without creating a Math object first.
- he syntax for any Math property is :
Math.property
JavaScript provides 8 mathematical constants that can be accessed as Math properties:
Math.E // returns Euler's number
Math.PI // returns PI
Math.SQRT2 // returns the square root of 2
Math.SQRT1_2 // returns the square root of 1/2
Math.LN2 // returns the natural logarithm of 2
Math.LN10 // returns the natural logarithm of 10
Math.LOG2E // returns base 2 logarithm of E
Math.LOG10E // returns base 10 logarithm of E
Math Methods
- Math.round()
- returns the nearest integer
- Math.cell()
- returns the value of x rounded up to its nearest integer
- Math.floor()
- returns the value of x rounded down to its nearest integer
- Math.trunc()
- returns the integer part of x
- Math.sign()
- returns if x is negative, null or positive
- Math.pow()
- returns the value of x to the power of y
- Math.sqrt()
- returns the square root of x
- Math.abs()
- returns the absolute (positive) value of x
- Math.sin()
- returns the sine (a value between -1 and 1) of the angle x (given in radians)
- Math.cos()
- returns the cosine (a value between -1 and 1) of the angle x (given in radians)
- Math.min() and Math.max()
- can be used to find the lowest or highest value in a list of arguments
- Math.random()
- returns a random number between 0 (inclusive), and 1 (exclusive)
- Math.log()
- returns the natural logarithm of x
- Math.log2()
- returns the base 2 logarithm of x
- Math.log10()
- returns the base 10 logarithm of x
JavaScript Math Methods
| Method | Description |
|---|---|
| abs(x) | Returns the absolute value of x |
| acos(x) | Returns the arccosine of x, in radians |
| acosh(x) | Returns the hyperbolic arccosine of x |
| asin(x) | Returns the arcsine of x, in radians |
| asinh(x) | Returns the hyperbolic arcsine of x |
| 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 |
| atanh(x) | Returns the hyperbolic arctangent of x |
| cbrt(x) | Returns the cubic root of x |
| ceil(x) | Returns x, rounded upwards to the nearest integer |
| cos(x) | Returns the cosine of x (x is in radians) |
| cosh(x) | Returns the hyperbolic cosine of x |
| exp(x) | Returns the value of Ex |
| 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 |
| sign(x) | Returns if x is negative, null or positive (-1, 0, 1) |
| sin(x) | Returns the sine of x (x is in radians) |
| sinh(x) | Returns the hyperbolic sine of x |
| sqrt(x) | Returns the square root of x |
| tan(x) | Returns the tangent of an angle |
| tanh(x) | Returns the hyperbolic tangent of a number |
| trunc(x) | Returns the integer part of a number (x) |