Sergey Brin

 

Douglas Crockford

 

Liam Crockford

 

None of these

 

Parses a string to integer

 

Parses a string to JSON

 

Parses a string from JSON to JSON2

 

Parses integer to string

 

application/x-json

 

text/json

 

application/json

 

application/javascript

 

String

 

Float

 

Integer

 

Date

 

It is faster and lighter than XML as on the wire data format

 

XML data is typeless while JSON objects are typed

 

JSON types: Number, Array, Boolean, String

 

XML data are all string

 

Conditional block

 

Block that combines a number of statements into a single compound statement

 

Both conditional block and a single statement

 

Block that contains a single statement

 

Number

 

String

 

Boolean

 

Array

 

Exchanging data

 

Non-exchanging data

 

Changing data

 

None of these

 

Keywords

 

Data types

 

Declaration statements

 

Prototypes

 

No, it will be stripped out.

 

Yes, both inside and outside of strings

 

Yes, only within strings

 

Yes, only outside of strings

 

Yes, if you use the ascii code.

 

Yes, you can use it without any special treatment

 

Yes, if it is escaped like ( \” )

 

No, you should use single quotes

 

It is an open standard

 

It is privately developed

 

It requires a license to use

 

.js

 

.json

 

.java

 

To store information remotely.

 

To send and receive bits of data.

 

To store information locally.

 

6

 

4

 

7

 

3

 

single quote

 

double quote

 

Double quote

 

Single quote

 

Infiniti

 

Null

 

Undefined

 

NaN

 

{ “letters” : [ “a”, “b”, “c”; ] }

 

{ ‘letters’ : {“a”, “b”, “c” } }

 

{ “letters” : [ a, b, c ] }

 

{ “letters” : [ “a”, “b”, “c” ] }

 

Data is in name/value pairs

 

Data is separated by comma

 

Curly brackets hold objects

 

Square bracket holds arrays

 

Acron

 

JSLint

 

Esprima

 

Traceur