Last modified on 18 March 2015, at 12:00

JavaScript/Relation to other languages

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If you have programming experience or training with another language, learning JavaScript will be easier and more difficult at the same time. The easy part will be picking up the syntax; especially, if you're used to a language like Java or C++, much of the arithmetic and control logic is the same.

C-like languages, (C++ and Java)Edit

Be careful, JavaScript is deceptive, it might entice you with its C-like syntax, but underneath is an entirely different beast.

Dynamic VariablesEdit

Starting with the obvious, JavaScript is a loosely typed language. There are several implications to this:

  • Integers and floats are both represented by 64-bit floating point numbers (But crazily enough bitwise operations are still available, and sometimes faster),
  • You may change a variable's type at will, and
  • Variables can be added and removed from an object at will.

The list goes on, and we are granted amazing powers to do wonderful and sometimes incredibly stupid things whilst programming, so it's very important to keep sober-minded when attempting to harness the power of the dynamic variables.


JavaScript is a classless language; classes can be simulated, but if you remove the idea of classes from your head, the learning process will become easier.

Variable scopeEdit

There are no such things as public, private or protected variables: These can be simulated, but again, it's best, if you don't envisage such concepts, as they will only hinder you. Go to Closures for more information on scope.

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