JavaScript - L'objet booléen
le Booleanobject représente deux valeurs, "true" ou "false". Si le paramètre de valeur est omis ou est 0, -0, nul, faux,NaN, undefined, ou la chaîne vide (""), l'objet a une valeur initiale de false.
Syntaxe
Utilisez la syntaxe suivante pour créer un boolean objet.
var val = new Boolean(value);Propriétés booléennes
Voici une liste des propriétés de l'objet booléen -
| N ° Sr. | Propriété et description |
|---|---|
| 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.