Introducing to ES6

• let – declare block-scoped variables using the let keyword.
• let vs. var – understand the differences between let and var.
• const – define constants using the const keyword.
• Default function parameters – learn how to set the default value for parameters of a function.
• Rest parameter – introduce you to the rest parameter and how to use them effectively.
• Spread operator – learn how to use the spread operator effectively.
• Object literal syntax extensions – provide a new way to define object literal.
• for…of – learn how to use the for...of loop to iterate over elements of an iterable object.
• Octal and binary literals –  provide support for binary literals and change the way to represent octal literals.
• Template literals – learn how to substitute variables in a string.

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