ActionScript for Flash MX: The Definitive Guide, Second Edition

Math.min() Method

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

Alphabetical Language Reference

|

609

Arguments

x A number.

y A number.

Returns

The larger of x and y.

Description

The max( ) function compares two numbers and returns the larger of the two. When

comparing two negative numbers, the one with a smaller absolute value is actually larger

(see the following Example). If used on strings, max( ) returns

NaN.

Example

Math.max(5, 1); // Returns 5

Math.max(-6, -5); // Returns -5

Math.max(Math.abs(-6), Math.abs(-5)); // Returns 6

This example constrains (clips) a value to the specified range:

function constrainToRange (checkVal, minVal, maxVal) {

return Math.min(Math.max(checkVal, minVal), maxVal);

}

// Constrain the slider to between 100 and 200

mySlider._x = constainToRange(mySlider._x, 100, 200);

This example returns the maximum value in an array:

function maxInArray (checkArray) {

maxVal = -Number.MAX_VALUE; // Initialize maxVal to a very small number

for (var i = 0; i < checkArray.length; i++) {

maxVal = Math.max(checkArray[i], maxVal);

}

return maxVal;

}

trace(maxInArray([2,3,66,4,342,-90,0])); // Displays: 342

See Also

Math.abs( ), Math.min( )

Math.min() Method

determine the smaller of two numbers

Flash 5; can be used when exporting Flash 4 movies

Math.min(x, y)

Arguments

x A number.

y A number.

Returns

The smaller of x and y.