What is scope in JavaScript

Variable Scope in JavaScript

JavaScript has two types of 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.

How To Use Server-Sent Events in Node.js to Build a Realtime App. Server-Sent Events (SSE) is a technology based on HTTP. On the client-side, it provides an API called EventSource (part of the HTML5 standard) that allows us to connect to the server a …

How To Use node-cron to Run Scheduled Jobs in Node.js . cron provides a way to repeat a task at a specific time interval. There may be repetitive tasks such as logging and performing backups that need to occur on a daily or weekly basis.One method fo …