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Undefined in JavaScript - CodeGK
Δ Javascript Examples
Data_types
String in JavaScript
Number in JavaScript
Boolean in JavaScript
Undefined in JavaScript
Object in JavaScript
Array in JavaScript
Null in JavaScript
Function in JavaScript
Print
document.write() in JavaScript
windows.alert() in JavaScript
console.log() in JavaScript
Comments
Single-Line Comments in JavaScript
Multi-Line Comments in JavaScript
Function
Function Call in JavaScript
Nested Function in JavaScript
Function_definitions
Add Two Numbers in JavaScript
Recursive Factiorial Calculation in JavaScript
Writing custom print function in JavaScript
♦ Undefined in JavaScript
♣ Example4: Undefined in JavaScript
A Data Type is undefined when it is left only defined, and not initialized.
Let us see two scenarios below in the given example:-
Example
Input:
Run CODE
Reload Code
Copy Code
Output:
Data_types
Undefined in JavaScript