Modulo operator: Scope of let and const: What is a block?
Modulo operator: Modulo operator (%) is used to find the remainder when two numbers are divided. Example: Scope of let and const: One of the major differences between var and let/const is the scope. However, one might wonder what scope exactly is. The scope of a variable is the segment of the code where the variable can be accessed. Variables declared using var have the global scope whereas let and const are blocks scoped. Here, global scope means the value of a variable is accessible globally within the code. On the other hand, block scope means the value of the variable is accessible only within the block where it is declared. What is a block? A block is nothing but a set of statements enclosed inside curly braces. It is also called a Compound Statement. It is used whenever we want to execute several lines whereas JS allows only one. For example, we can use a block after an if condition to execute the block code conditionally. Exam...