Add JS variable scoping question from #290

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AJ Jordan 2017-09-20 16:00:10 -04:00
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@ -152,6 +152,7 @@ duplicate([1,2,3,4,5]); // [1,2,3,4,5,1,2,3,4,5]
* What is event loop?
* What is the difference between call stack and task queue?
* Explain the differences on the usage of `foo` between `function foo() {}` and `var foo = function() {}`
* What are the differences between variables created using `let`, `var` or `const`?
#### Testing Questions: