Javascript var

In JavaScript, var is one of the three ways to declare variables, along with let and const. Here's a detailed overview of how var works and its characteristics:

Characteristics of var:

1)  Function Scope:

     Variables declared with var are function-scoped. This means they are only accessible within the function in which they are defined. However, if declared outside a function, they become global variables.

 2) Re-declaration:

     You can re-declare variables using var within the same scope without any errors.

3) Global Variables:

    When a var is declared outside any function, it becomes a property of the global object.

4) No Block Scope:

     var does not respect block scope (i.e., { ... } created by loops or conditionals). This means that variables declared with var are accessible outside of blocks, even if they are declared inside.