JavaScript boolean.prototype Property

1. Syntax of JavaScript boolean.prototype Property
2. Example 1: Use boolean.prototype to Get the Value Added With Different Object
3. Example 2: Use boolean.prototype With the Function to Create a Prototype for the Object

In JavaScript, the .prototype property is available with all objects. This method allows us to add new properties to objects.

Syntax of JavaScript boolean.prototype Property

boolean.prototype.func = function(){
    if(this.valueOf()){
	/* perform some operation */
	}
}
let val = false;
val.func();

Parameters

Return

This method returns the value or function used to create the prototype.

Example 1: Use boolean.prototype to Get the Value Added With Different Object

In JavaScript, the boolean.prototype property allows us to add custom value or function as a prototype for different objects.

In this example, we have created an empty object and added a custom value that will be added to the output by using the boolean.prototype property.

function Obj(){}
const object = new Obj();
Obj.prototype.value = "Add word";
console.log(object.value);

Output:

Add word

Example 2: Use boolean.prototype With the Function to Create a Prototype for the Object

In JavaScript, the boolean.prototype property uses a function to create the prototype for an object. In this example, we have created an object and a function.

Then, we used the boolean.prototype property to set a prototype for the object.

Boolean.prototype.setvalue = function() {
if (this.valueOf() == false){
   return "add value";
} else {
   return " function";
   }
};
let object = false;
console.log(object.setvalue());

Output:

add value

The boolean.prototype method is supported in all browsers.