Object-Oriented JavaScript

Tip

Tips and tricks

Functions allow you group together some code, give this code a name, and reuse it later, addressing it by name.

Single line comments—start with // and end at the end of the line
Multi-line comments—start with /* and end with */ on the same line or any subsequent line. Note that any code in between the comment start and the comment end will be ignored.

! has the highest precedence and is executed first, assuming there are no parentheses that demand otherwise. Then, in the order of precedence, comes && and finally ||

!—logical NOT (negation)
&&—logical AND
||—logical OR

There are some additional characters which are rarely used: \b (backspace), \v (vertical tab), and \f (form feed).

A string is a sequence of characters used to represent text.

NaN is a special value that is also a number.

When you sum infinity and minus infinity, you don't get 0, but something that is called NaN (Not A Number).

the biggest number JavaScript can handle is 1.7976931348623157e+308 while the smallest is 5e-324.