Constants are block-scoped variables.
The statement "let" declares a block scope local variable.
What is the final value of "obj" in the following example?
What will the result of the following be?
Rest is a new way for functions to handle an arbitrary number of parameters. Can you guess what the mysterious "a" variable holds?
String interpolation is a much-needed new feature that is finally available in JavaScript. See the example below. Is there anything wrong with it?
What value will this expression return?
What will this function return?
What is a Promise()?
What value will this expression return?
What will the result of this expression be?
What will this function return?
What result will this expression have?
Why is super used?
ES6 introduces a special "const" declaration. Do you know what it does?
ES6 gives you 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 you 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 in the triangle array?
Is this a valid code?