instanceof class code example
Example 1: instanceof javascript
var color = "red";
var color2 = {};
color instanceof String
color2 instanceof Object
Example 2: insanceof
The instanceof operator tests to see if the prototype property of a constructor
appears anywhere in the prototype chain of an object. The return value is a
boolean value.
For example :-
function Car(make, model, year) {
this.make = make;
this.model = model;
this.year = year;
}
const auto = new Car('Honda', 'Accord', 1998);
console.log(auto instanceof Car);
console.log(auto instanceof Object);
Example 3: Explain about instanceof operator in java
An instanceof in Java is a comparison operator which, given an object instance,
checks whether that instance is of a specified type (class/sub-class/interface)
or not. Just like other comparison operators, it returns true or false.
Comparing any object instance with a null type through instanceof operator
returns a false.
Instanceof operator is used to test the object is of which type.
Syntax : <reference expression> instanceof <destination type>
Instanceof returns true if reference expression is subtype of destination type.
Instanceof returns false if reference expression is null.