Name
Math — mathematical functions and constants
Availability
JavaScript 1.0; JScript 1.0; ECMAScript v1
Synopsis
Math.constantMath.function( )
Constants
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Math.E The constant e the base of the natural logarithms.
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Math.LN10 The natural logarithm of 10.
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Math.LN2 The natural logarithm of 2.
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Math.LOG10E The base-10 logarithm of e
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Math.LOG2E The base-2 logarithm of e
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Math.PI The constant π.
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Math.SQRT1_2 1 divided by the square root of 2.
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Math.SQRT2 The square root of 2.
Static Functions
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Math.abs( ) Computes an absolute value.
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Math.acos( ) Computes an arc cosine.
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Math.asin( ) Computes an arc sine.
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Math.atan( ) Computes an arc tangent.
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Math.atan2( ) Computes the angle from the X-axis to a point.
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Math.ceil( ) Rounds a number up.
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Math.cos( ) Computes a cosine.
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Math.exp( ) Computes a power of e
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Math.floor( ) Rounds a number down.
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Math.log( ) Computes a natural logarithm.
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Math.max( ) Returns the larger of two numbers.
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Math.min( ) Returns the smaller of two numbers.
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Math.pow( ) Computes xy
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Math.random( ) Computes a random number.
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Math.round( ) Rounds to the nearest integer.
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Math.sin( ) Computes a sine.
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Math.sqrt( ) Computes a square root.
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Math.tan( ) Computes a tangent.
Description
Math is an object that defines properties that refer to useful mathematical functions and constants. These functions and constants are conveniently grouped by this Math object and are invoked with syntax like this:
y = Math.sin(x); area = radius * radius * Math.PI;
Math is not a class of objects like Date and String ...