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Global variable VS local variable

Like other programming languages, JavaScript also has local and global variables. But the declaration and scope of a variable in JavaScript is different from others programming languages. In this article, I am going to explain the difference between local and global variables in JavaScript.

Global Variable :
A global variable has a global scope which means it can be defined anywhere in your JavaScript code.

Local Variable :
A local variable will be visible only within a function where it is defined. Function parameters are always local to that function.

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