Variables in JavaScript are used to store data values that can be reused throughout your code. They are named containers that can hold different types of data, such as numbers, strings, arrays, or objects. Variables in JavaScript are declared using the “var”, “let”, or “const” keywords.
Declaring a variable means creating a named container in memory to hold a value. This involves specifying the name of the variable and optionally initializing it with a value. In JavaScript, variables are declared using the “var”, “let”, or “const” keywords, followed by the variable name.
An “assignment” operator is used in JavaScript to assign a value to a variable. The “=” operator is used for this purpose, and it assigns the value on the right-hand side of the operator to the variable on the left-hand side.
Information received from the user in JavaScript is often called “user input” or “user data”. This can be obtained through various methods, such as input fields, forms, or prompts. Once received, the user input can be stored in a variable and used in your code as needed.