Definition
You can think of a variable like a bucket used to hold or store substance, in this the substance to be stored is data to be used within a program.
Use cases and Examples
01: var x = 1;
02: var result = 2 +x;
03: console.log("result contains: ", result);The above Javascript code has two variables namely x is assigned the value 1 and result to the sum of 2 and x which should be 3;
Summary
Variables usually can store whatever data type is available within the programming language under discussion.
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