Difference Between Static and Const in JavaScript
Different languages make use of both static and const variables. We will discuss the differences between both variables in this section. I would like to discuss this further.
What is a Static variable in JavaScript
Static variables are class properties that are used within a class, rather than on instances of the class. In a class, the variable is stored in the data segment area of memory, and its value is shared by all instances of the class. The static keyword is used to refer to a static variable. It is possible to make a static value, a static function, with classes, operators, properties, and work as a utility function for the application or website using the static keyword. Static variables are set at runtime and are a kind of global variable that can be used for any instance of the specified class.
What is a Const variable in JavaScript
Const variables have a fixed value and remain the same throughout the program. A property of the const variable is that its value cannot be changed or modified throughout the program. A const value informs the compiler that a value is fixed and should not be modified by the programmer. The programmer receives an error message whenever he attempts to modify a const value. The ‘const’ keyword and the input value are required to use a const variable.
Static vs. Const
| Static | Const |
| Javascript class programs use the static keyword to define static properties and methods. | Defining a constant value for a variable is accomplished by using the const keyword. |
| Only the class definition can access the static keyword. To access the static keyword for non-static methods, one must invoke them using the class name. We can, however, use this keyword to call a static method within another static method. | Const values can be accessed globally or locally, but global constants cannot be accessed as window object properties. |
| Objects are created or cloned using static methods, which are utility functions. | Const variables are used to declare constants or fixed values that cannot be altered. |
| In JavaScript, static objects are identified by a keyword known as ‘static’. | The const keyword in JavaScript is used to declare a const variable and initialize it with a constant value. |
| It is also possible to use JavaScript static with classes and methods. | It is also possible to use JavaScript const with objects and arrays. |
| It is possible to reassign the value of a static variable. | A const variable cannot be reassigned. It is possible, however, to re-declare the const variable in a different block scope. |
