JavaScript Instanceof

JavaScript Instanceof Operator

The instanceof operator return true if the specified object is an instance of the specified object.

The Syntax of instanceof operator is as follows:

 var result = instanceof;

JavaScript Data Types

• Unlike in C, C++ and Java, there are no explicit data types in JavaScript
• Nevertheless, it recognizes & distinguishes among the following types of values:
  • Numbers, e.g., 23, 4.3, -230, 4.4e-24
  • Booleans, e.g., true, false
  • Strings, e.g., “hello”, “What’s the time?”
  • Undefined

Example

Output

instanceof Operators

true
true