JavaScript function and variable names are case-sensitive. The
variables Count, count, and COUNT are all different.
To write a function that accepts and processes an unlimited
number of parameters, access the parameters through the arguments array, which is a member of all
functions.
One way to return multiple values from a function is to place them all inside an array and return the array.
When defining a class, use the this keyword to refer to the current
object.
The methods of a class do not have to be defined within a class
definition. If a method is defined outside the constructor, the method
name must be assigned to the this
object within the class definition.
New objects are created using the new keyword.
A property or method can be made available to all objects in a
class without replicating the property or method within the object by
using the prototype keyword to
create a single instance, which is then passed by reference to all the
objects in the class.
To create a multidimensional array, place subarrays inside the main array.
The syntax you would use to create an associative array is
key :
value, within curly braces, as in the
following:
assocarray = {"forename" : "Paul", "surname" : "McCartney", "group" : "Beatles"}A statement to sort an array of numbers into descending numerical order would look like this:
numbers.sort(function(a,b){return b - a})