if (name = "fred" && age < 16 )

if (name === "fred" && age < 16 )

if (name = "fred" || age < 16 )

if (name === "fred" || age < 16 )

repeat 10

for (var i=0; i<10; i++)

repeat { } until 10;

while (i = 10)

+

++

=

==

Integer

boolean

floating-point

string

0

1

Any number

OR

or

||

|

Modulo

increment

Decrement

Addition

||

&&

$$

!

Page manipulation capabilities and advanced interactivity

Content and page structure, but minimum interactivity

Formatting and page design, plus some simple interactivity

Content, page structure, and advanced interactivity

interpret and automate a list of tasks that would otherwise be executed one-at-a-time by a person.

interpret and execute a list of tasks once the list is compiled.

need the server to interpret a script and to return the appropriate responses.

perform their functionality on the server side, which reduces processing time dramatically.