What is scope in JavaScript

What is scope in JavaScript

Variable Scope in JavaScript

JavaScript has two scopes: global and local. A variable that is declared outside a function definition is a global variable, and its value is accessible and modifiable throughout your program.

A variable that is declared inside a function definition is local. It is created and destroyed every time the function is executed, and it cannot be accessed by any code outside the function.

 	var x = 10;   	
        function xyz(){       	
		var y = 5;     
	} 

Here x is the global variable and it hsa global scope. We can access x inside the function and outside of it.

Here y is the local variable and it has local scope. we can only access it inside of the function.

JavaScript on

What is SEO

What is SEO

SEO is the part of digital marketing. SEO are two types one is on page SEO and another is off page SEO. …

read more
Security Checks in Node Js

Security Checks in Node Js

We can use lots of security check on node js for development and production environment. …

read more