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What you'll learn
- Explain difference between global scope, function scope and block scope
- Understand how variables declared using "var" behave
- Explain difference between "let" and "const"
- Practice different variables declarations types
- Deeply understand variables lifecycle phases for variables declared using "var", "let" and "const"
- Explain lifecycle phases for the undeclared variables
- Understand lifecycle of the function
- Practice and understand most important variables usage guidelines
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