Few grammatical corrections

The sentence should say "Why we need tests" with no question mark, or "Why do we need tests?" I think keeping the question mark makes it more personal.

Potential Grammar Correction

it could be more intuitive. function() looks like calling a function but example is about function expression.

Fixed a small typo with pluralization.

store vs keeps stored

Plunker reminder #1775

typo

Fix plural typo line 414

Fix comma splice.

typos

pseudo function expression

Grammar Fix Update in article.md

Fix grammatical error

Few grammatical corrections

typo

repeated word

…-microtask-queue

close #2534 by slightly changing 7-microtask-queue

typo

code

typos? easier reading

…vascript.info into sync