Anything that can change is referred to as variable. A variable in JavaScript keeps a data value that can be updated later. To declare a variable in JavaScript, use the reserved keyword var.
It is not recommended to use the same variable name multiple times in JavaScript because it can cause confusion. It is better to use a different variable name for each instance of the same variable.
A JavaScript variable is a name that represents a value that can change over time. The name of the variable is not only used to represent the value but also for the purpose of storing it.
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