| 5. 8. 11. Casting to Boolean value |
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The Boolean() type cast returns true when |
the value is a string with at least one character, |
a number other than 0, or |
an object; |
The Boolean() type cast returns false when |
- the value is an empty string,
- the number 0,
- undefined, or
- null.
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var b1 = Boolean(""); //false -- empty string
var b2 = Boolean("JavaScript"); //true -- non-empty string
var b3 = Boolean(100); //true -- non-zero number
var b4 = Boolean(null); //false -- null
var b5 = Boolean(0); //false -- zero
var b6 = Boolean(new Object()); //true -- object
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