May 2001
Intermediate to advanced
720 pages
23h 24m
English
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Name
Math.sqrt( ) Method — calculate the square root of a number
Availability
Flash 5; may be used when exporting Flash 4 movies
Synopsis
Math.sqrt(x)
Arguments
- x
A non-negative integer.
Returns
The square root of x, or
NaN if x is less than
0.
Description
The sqrt( ) method returns the positive root of
its operand (even though there may also be a mathematically valid
negative root). It is equivalent to:
Math.pow(x, 0.5)
Example
Math.sqrt(4); // Returns 2, although -2 is also a valid root Math.sqrt(36); // Returns 6, although -6 is also a valid root Math.sqrt(-20); // Returns NaN
See Also
Math.pow( ), Math.SQRT2,
Math.SQRT1_2
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