November 2001
Intermediate to advanced
936 pages
68h 43m
English
isFinite( ) — determine whether a number is finite
JavaScript 1.2; JScript 3.0; ECMAScript v1
isFinite(n)n
The number to be tested.
true if n is (or can be
converted to) a finite number or false if
n is NaN (not a number)
or positive or negative infinity.