Constants are block-scoped variables.
The statement "var" declares a block-scoped variable.
The statement "let" declares a block scope local variable.
What is the final value of "obj" in the following example?
What will be the result of the following?
Rest is a new way for functions to handle an arbitrary number of parameters. Can you guess what the mysterious "a" variable holds?
What value will return this expression?
What will return this function?
What's a Promise()?
What value will return this expression ?
What will be the result of this expression?
What result will have this expression?
Why is used super?
ES6 introduces a special "const" declaration. Do you know what it does?
ES6 gives us a number of new methods for operating with strings. Which one replaces this annoying piece of code?
Array.from() is a powerful method which converts array-like objects into real arrays. Why do we use it in the code below?
ES6 gives an alternative way to assign variables. Can you guess what the below code does?
What is stored into the triangle array?
Is this a valid code?