Math

Math is een ingebouwd object met eigenschappen en methodes voor wiskundige constanten en functies. Het is geen functie object.

Beschrijving

Het object Math is niet een constructor. Alle properties en functies van Math zijn statisch. Je refereert naar het constante pi als Math.PI , en de sinus functie is bijvoorbeeld Math.sin(x), waarbij x het argument is. Constantes zijn gedefinieerd met de nauwkeurigheid van echte getallen in JavaScript

Om het Math object uit te breiden gebruik je 'prototype' niet. Math kan namelijk direct uitgebreid worden.

Math.propNaam = propWaarde;
Math.methodeNaam = methodeRef;

Eigenschappen

Math.E

Euler's constant and the base of natural logarithms, approximately 2.718.

Math.LN2

Natural logarithm of 2, approximately 0.693.

Math.LN10

Natural logarithm of 10, approximately 2.303.

Math.LOG2E

Base 2 logarithm of E, approximately 1.443.

Math.LOG10E

Base 10 logarithm of E, approximately 0.434.

Math.PI

Ratio of the circumference of a circle to its diameter, approximately 3.14159.

Math.SQRT1_2

Square root of 1/2; equivalently, 1 over the square root of 2, approximately 0.707.

Math.SQRT2

Square root of 2, approximately 1.414.

Methodes

Math.abs(x)

Returns the absolute value of a number.

Math.acos(x)

Returns the arccosine of a number.

Math.acosh(x)

Returns the hyperbolic arccosine of a number.

Math.asin(x)

Returns the arcsine of a number.

Math.asinh(x)

Returns the hyperbolic arcsine of a number.

Math.atan(x)

Returns the arctangent of a number.

Math.atanh(x)

Returns the hyperbolic arctangent of a number.

Math.atan2(y, x)

Returns the arctangent of the quotient of its arguments.

Math.cbrt(x)

Returns the cube root of a number.

Math.ceil(x)

Returns the smallest integer greater than or equal to a number.

Math.clz32(x)

Returns the number of leading zeroes of a 32-bit integer.

Math.cos(x)

Returns the cosine of a number.

Math.cosh(x)

Returns the hyperbolic cosine of a number.

Math.exp(x)

Returns E^x, where x is the argument, and E is Euler's constant (2.718…), the base of the natural logarithm.

Math.expm1(x)

Returns subtracting 1 from exp(x).

Math.floor(x)

Returns the largest integer less than or equal to a number.

Math.fround(x)

Returns the nearest single precision float representation of a number.

Math.hypot([x[, y[, …]]])

Returns the square root of the sum of squares of its arguments.

Math.imul(x, y)

Returns the result of a 32-bit integer multiplication.

Math.log(x)

Returns the natural logarithm (log_e, also ln) of a number.

Math.log1p(x)

Returns the natural logarithm (log_e, also ln) of 1 + x for a number x.

Math.log10(x)

Returns the base 10 logarithm of a number.

Math.log2(x)

Returns the base 2 logarithm of a number.

Math.max([x[, y[, …]]])

Returns the largest of zero or more numbers.

Math.min([x[, y[, …]]])

Returns the smallest of zero or more numbers.

Math.pow(x, y)

Returns base to the exponent power, that is, baseexponent.

Math.random()

Returns a pseudo-random number between 0 and 1.

Math.round(x)

Returns the value of a number rounded to the nearest integer.

Math.sign(x)

Returns the sign of the x, indicating whether x is positive, negative or zero.

Math.sin(x)

Returns the sine of a number.

Math.sinh(x)

Returns the hyperbolic sine of a number.

Math.sqrt(x)

Returns the positive square root of a number.

Math.tan(x)

Returns the tangent of a number.

Math.tanh(x)

Returns the hyperbolic tangent of a number.

Math.toSource()

Returns the string "Math".

Math.trunc(x)

Returns the integral part of the number x, removing any fractional digits.

Specifications

Browser compatibiliteit

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Zie ook

• Number