Basic And Variables MCQ question and answer in javascript with solution Page-6 section-1

51.
The object has three object attributes namely

A. Class, parameters, object’s extensible flag

B. Prototype, class, objects’ parameters

C. Prototype, class, object’s extensible flag

D. Native object, Classes and Interfacces and Object’s extensible flag

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52.

Consider the following code snippet :

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

In the above snippet, firstname and surname are

A. properties

B. property values

C. property names

D. objects

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53.
A linkage of series of prototype objects is called as :

A. prototype stack

B. prototype chain

C. prototype class

D. prototypes

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54.

Consider the below given syntax

book[datatype]=assignment_value;

In the above syntax, the datatype within the square brackets must be

A. An integer

B. A String

C. An object

D. None of the mentioned

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55.
To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

A. isPrototypeOf() method

B. equals() method

C. === operator

D. none of the mentioned

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56.

Consider the following code snippet

function f() {};

The above prototype represents a

A. Function f

B. A custom constructor

C. Prototype of a function

D. Not valid

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57.
The purpose of extensible attribute is to

A. make all of the own properties of that object nonconfigurable

B. to configure and bring a writable property

C. “lock down” objects into a known state and prevent outside tampering

D. all of the mentioned

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58.

Identify the process done in the below code snippet

o = {x:1, y:{z:[false,null,""]}}; 
s = JSON.stringify(o); 
p = JSON.parse(s);

A. Object Encapsulation

B. Object Serialization

C. Object Abstraction

D. Object Encoding

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59.
The basic purpose of the toLocaleString() is to

A. return a localised object representation

B. return a parsed string

C. return a local time in the string format

D. return a localized string representation of the object

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60.
Javascript is _________ language.

A. Programming

B. Application

C. None of These

D. Scripting

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51.
The object has three object attributes namely

Answer & Solution

52.
Consider the following code snippet :
`var book = { "main title": "JavaScript", 'sub-title': "The Definitive Guide", "for": "all audiences", author: { firstname: "David", surname: "Flanagan" } };`
In the above snippet, firstname and surname are

Answer & Solution

53.
A linkage of series of prototype objects is called as :

Answer & Solution

54.
Consider the below given syntax

`book[datatype]=assignment_value;`
In the above syntax, the datatype within the square brackets must be

Answer & Solution

55.
To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

Answer & Solution

56.
Consider the following code snippet
`function f() {};`
The above prototype represents a

Answer & Solution

57.
The purpose of extensible attribute is to

Answer & Solution

58.
Identify the process done in the below code snippet
`o = {x:1, y:{z:[false,null,""]}}; s = JSON.stringify(o); p = JSON.parse(s);`

Answer & Solution

59.
The basic purpose of the toLocaleString() is to

Answer & Solution

60.
Javascript is _________ language.

Answer & Solution

Basic And Variables MCQ question and answer in javascript with solution

51. The object has three object attributes namely

Answer & Solution

52. Consider the following code snippet : var book = { "main title": "JavaScript", 'sub-title': "The Definitive Guide", "for": "all audiences", author: { firstname: "David", surname: "Flanagan" } }; In the above snippet, firstname and surname are

Answer & Solution

53. A linkage of series of prototype objects is called as :

Answer & Solution

54. Consider the below given syntax book[datatype]=assignment_value; In the above syntax, the datatype within the square brackets must be

Answer & Solution

55. To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

Answer & Solution

56. Consider the following code snippet function f() {}; The above prototype represents a

Answer & Solution

57. The purpose of extensible attribute is to

Answer & Solution

58. Identify the process done in the below code snippet o = {x:1, y:{z:[false,null,""]}}; s = JSON.stringify(o); p = JSON.parse(s);

Answer & Solution

59. The basic purpose of the toLocaleString() is to

Answer & Solution

60. Javascript is _________ language.

Answer & Solution

51.
The object has three object attributes namely

52.
Consider the following code snippet :
`var book = { "main title": "JavaScript", 'sub-title': "The Definitive Guide", "for": "all audiences", author: { firstname: "David", surname: "Flanagan" } };`
In the above snippet, firstname and surname are

53.
A linkage of series of prototype objects is called as :

54.
Consider the below given syntax

`book[datatype]=assignment_value;`
In the above syntax, the datatype within the square brackets must be

55.
To determine whether one object is the prototype of (or is part of the prototype chain of) another object, one should use the

56.
Consider the following code snippet
`function f() {};`
The above prototype represents a

57.
The purpose of extensible attribute is to

58.
Identify the process done in the below code snippet
`o = {x:1, y:{z:[false,null,""]}}; s = JSON.stringify(o); p = JSON.parse(s);`

59.
The basic purpose of the toLocaleString() is to

60.
Javascript is _________ language.