The problems should be blatantly obvious to developers who have used languages other than JavaScript and PHP (which both have many of the same flaws). Once you

The problems should be blatantly obvious to developers who have used languages other than JavaScript and PHP (which both have many of the same flaws). Once you've studied and used languages like C, C++, Python, Java, C#, Haskell, Scheme, Erlang and Standard ML, you'll see what we mean when we say that JavaScript is a very flawed language. Pick any of its features, and compare that feature to the equivalent feature in the other languages. JavaScript's approach will generally be the worst of all of them.