Javascript Online Test

1. Get the object

2. Dereference the current scope chain

3. Reference the current scope chain

4. Return the value

Correct Answer : C

1. slice()

2. split()

3. substr()

4. substring()

Correct Answer : D

1. semi-colon

2. line break

3. comma

4. white space

Correct Answer : C

1. Alert

2. Prompt

3. Confirm

4. All of the above

Correct Answer : D

1. No, JSON has no support for any kind of character encoding.

2. No, JSON only has support for UTF-8 characters.

3. Yes, JSON has support for Unicode characters. Allowing for almost any information in any human language

4. Yes, only when stored as the key in a ( key : value ) pair.

Correct Answer : C

var book = {
“main title”: “JavaScript”,
‘sub-title’: “The Definitive Guide”,
“for”: “all audiences”,
author: {
firstname: “David”,
surname: “Flanagan”
}
};

1. properties

2. property values

3. property names

4. objects

Correct Answer : C

1. Both a and b are equal in value, type and reference address

2. Both a and b are equal in value

3. Both a and b are equal in value and type

4. There is no such statement

Correct Answer : C

1. if

2. with

3. debugger

4. use strict

Correct Answer : D

1. Load time errors

2. Run time errors:

3. Logical Errors:

4. All of the above

Correct Answer : B

1. False

2. True

Correct Answer : B

for(var num=10;num>=1;num–)
{
    document.writeln(num);
}

var num=10;
while(num>=1)
{
    document.writeln(num);
    num++;
}

1. Code 1

2. Code 2

3. Both Code 1 and Code 2

4. Cannot Compare

Correct Answer : A

1. It can not Handling dates and time.

2. JavaScript is a object-based scripting language.

3. JavaScript is not interpreter based scripting language.

4. All of the above

Correct Answer : B

1. False, JSON is language independent.

2. False, JavaScript must be available although it is not necessary to use.

3. True, though all browsers have JavaScript enabled.

4. True, though JavaScript is readily available in today's browsers.

Correct Answer : A

1. Value

2. Object

3. There are none

4. Key

Correct Answer : C

1. Yes, it provides try, catch as well as throw key word for exception handling

2. Yes, but it provides only try block

3. Yes, but it provides only Try catch block, but does not allow throw exception

4. No

Correct Answer : A

1. JSON.parse('({"FirstName": "John", "LastName":"Doe"})');

2. JSON.parse("{'FirstName': 'John', 'LastName':'Doe'}");

3. JSON.parse("({'FirstName': 'John', 'LastName':'Doe'})");

4. JSON.parse('{"FirstName": "John", "LastName":"Doe"}');

Correct Answer : D

1. Literal scoping

2. Static scoping

3. Dynamic scoping

4. Generic scoping

Correct Answer : C

1. It controls spacing in the resulting JSON string

2. All three statements are false

3. It removes whitespace

4. It is an optional parameter

Correct Answer : C

1. A collection of name/value pairs, and an ordered list of values, or array.

2. A collection of object/item pairs, and an ordered list of pairs, or array.

3. A collection of name/value objects, and an ordered list of objects, or array.

4. A collection of native-value pairs, and an ordered list of arrays, or values.

Correct Answer : A

1. Object

2. Array

3. Class

4. Not a valid JSON string

Correct Answer : A

1. True

2. False

Correct Answer : A

1. Class, parameters, object’s extensible flag

2. Prototype, class, objects’ parameters

3. Prototype, class, object’s extensible flag

4. Native object, Classes and Interfaces and Object’s extensible flag

Correct Answer : C

1. Objects

2. Variables

3. Functions

4. Graphics

Correct Answer : D

1. AvailHeight

2. ColorsDepth

3. AvailWidth

4. ColorDepth

Correct Answer : B

1. String

2. Array

3. Boolean

4. Object

Correct Answer : D

1. JSONTokener

2. JSONParser

3. JParser

4. ParserJ

Correct Answer : A

1. Undefined

2. Number

3. Boolean

4. Float

Correct Answer : D

1. for

2. while

3. forwhich

4. dowhile

Correct Answer : B

1. A space

2. A semicolon

3. A comma

4. A colon

Correct Answer : D

1. anchor()

2. big()

3. blink()

4. italics()

Correct Answer : B