Create constants variable

Unique and immutable data type to be used as an identifier for object properties

Work with single characters of String type

{expression}

$[expression]

[expression]

&{expression}

main

prot

super

base

None of the above

It referes previous object

It is variable which contains value

It refers current object

perform ignore matching

perform both case-sensitive and case-insensitive matching

perform case-sensitive matching

perform case-insensitive matching

An infinite loop

An illegal JavaScript statement

A typographical error.

50

510

15

5