Methods and Operators

break

Default javascript statement to stop loops and switch statements.

continue

The continue statement breaks one iteration (in the loop) if a specified condition occurs, and continues with the next iteration in the loop. The difference between continue and the break statement, is instead of "jumping out" of a loop, the continue statement "jumps over" one iteration in the loop.

do

Executes a block of statements and repeats the block while a condition is true

else

Marks a block of statements to be executed depending on a condition

false

zero, primitive type

for

Loops through a block of code a number of times

function

Declares a function

if

Marks a block of statements to be executed depending on a condition

new

creates a new object

null

primitive type

return

Stops the execution of a function and returns a value from that function

true

one, primitive type

typeof

use the typeof operator to find the data type of a JavaScript variable ; "void" "string" "number" "function" "object"

undefined

primitive type

var

Declares a variable

while

Marks a block of statements to be executed while a condition is true