JavaScript: l'oggetto booleano

Il Booleanobject rappresenta due valori, "true" o "false". Se il parametro value viene omesso o è 0, -0, null, false,NaN, undefined, o la stringa vuota (""), l'oggetto ha un valore iniziale di false.

Sintassi

Usa la seguente sintassi per creare un file boolean oggetto.

var val = new Boolean(value);

Proprietà booleane

Ecco un elenco delle proprietà dell'oggetto booleano:

Sr.No.	Proprietà e descrizione
1	constructor Returns a reference to the Boolean function that created the object.
2	prototype The prototype property allows you to add properties and methods to an object.

In the following sections, we will have a few examples to illustrate the properties of Boolean object.

Boolean Methods

Here is a list of the methods of Boolean object and their description.

Sr.No.	Method & Description
1	toSource() Returns a string containing the source of the Boolean object; you can use this string to create an equivalent object.
2	toString() Returns a string of either "true" or "false" depending upon the value of the object.
3	valueOf() Returns the primitive value of the Boolean object.

In the following sections, we will have a few examples to demonstrate the usage of the Boolean methods.