Scope in JavaScript refers to context (or portion) of the code which determines the accessibility (visibility) of variables. In JavaScript, we have two types of scope, local , and global.

In JavaScript, for example, you can assign a number to a variable named "x" as easily as you can assign the word "apple" to it. This flexibility allows you to create programs without worrying ...

Another new feature called ‘let’ offers a new way of defining variables in JavaScript. You’re probably used to defining them with ‘var’ but the difference is subtle: scope.

If you write JavaScript, you have probably used higher-order functions and not even noticed. If you have ever replaced a for loop with an array method, you’ve used higher-order functions.

JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.