Practice Basic And Variables Multiple Choice Questions Quiz-2

Q.1

JavaScript Code is written inside file having extension __________.

.javascript
.jsc
.jvs
.js

Q.2

Local Browser used for validations on the Web Pages uses __________.

CSS
JS
HTML
Java

Q.3

We can embed JS code inside HTML directly ?

True
False

Q.4

Javascript is _________ language.

Programming
Application
None of These
Scripting

Q.5

The object has three object attributes namely

Class, parameters, object’s extensible flag
Prototype, class, objects’ parameters
Prototype, class, object’s extensible flag
Native object, Classes and Interfacces and Object’s extensible flag

Q.6

What will be the step of the interpreter in a jump statement when an exception is thrown?

The interpreter stops its work
The interpreter throws another exception
The interpreter jumps to the nearest enclosing exception handler
None of the mentioned

Q.7

Consider the following code snippet

function printArray(a) 
{
     var len = a.length, i = 0;
     if (len == 0)
        console.log("Empty Array");
     else 
     {
         do 
         {
             console.log(a[i]);
         } while (++i < len);
     }
}

What does the above code result?

Prints the numbers in the array in order
Prints the numbers in the array in the reverse order
Prints 0 to the length of the array
Prints “Empty Array”

Q.8

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

properties
property values
property names
objects

Q.9

A conditional expression is also called a

Alternate to if-else
Immediate if
If-then-else statement
None of the mentioned

Q.10

When an empty statement is encountered, a JavaScript interpreter

Ignores the statement
Prompts to complete the statement
Throws an error
Throws an exception

Q.11

Consider the following code snippet

while (a != 0)
{
   if (spam>a == 1) 
       continue;
   else 
       a++;
}

What will be the role of the continue keyword in the above code snippet?

The continue keyword restarts the loop
The continue keyword skips the next iteration
The continue keyword skips the rest of the statements in that iteration
None of the mentioned

Q.12

Consider the following code snippet


function f(o) 
{
     if (o === undefined) debugger;
}

What could be the task of the statement debugger?

It does nothing but a simple breakpoint
It debugs the error in that statement and restarts the statement’s execution
It is used as a keyword that debugs the entire program at once
All of the mentioned

Q.13

Among the keywords below, which one is not a statement?

debugger
with
if
use strict

Q.14

What are the three important manipulations done in a for loop on a loop variable?

Updation, Incrementation, Initialization
Initialization,Testing, Updation
Testing, Updation, Testing
Initialization,Testing, Incrementation

Q.15

Consider the following code snippet

function tail(o) 
{ 
    for (; o.next; o = o.next) ;
    return o;
}

Will the above code snippet work? If not, what will be the error?

No, this will throw an exception as only numerics can be used in a for loop
No, this will not iterate
Yes, this will work
No, this will result in a runtime error with the message “Cannot use Linked List”

Q.16

One of the special feature of an interpreter in reference with the for loop is that

Before each iteration, the interpreter evaluates the variable expression and assigns the name of the property
The iterations can be infinite when an interpreter is used
The body of the loop is executed only once
All of the mentioned

Q.17

A linkage of series of prototype objects is called as :

prototype stack
prototype chain
prototype class
prototypes

Q.18

Consider the below given syntax

book[datatype]=assignment_value;

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

An integer
A String
An object
None of the mentioned

Q.19

The unordered collection of properties, each of which has a name and a value is called

String
Object
Serialized Object
All of the mentioned

Q.20

What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?

The property will be stored in a cache
The loop will not run
That property will not be enumerated
All of the mentioned

JavaScript Code is written inside file having extension __________.

Local Browser used for validations on the Web Pages uses __________.

We can embed JS code inside HTML directly ?

Javascript is _________ language.

The object has three object attributes namely

What will be the step of the interpreter in a jump statement when an exception is thrown?

Consider the following code snippet
`function printArray(a) { var len = a.length, i = 0; if (len == 0) console.log("Empty Array"); else { do { console.log(a[i]); } while (++i < len); } }`
What does the above code result?

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 conditional expression is also called a

When an empty statement is encountered, a JavaScript interpreter

Consider the following code snippet
`while (a != 0) { if (spam>a == 1) continue; else a++; }`
What will be the role of the continue keyword in the above code snippet?

Consider the following code snippet
`function f(o) { if (o === undefined) debugger; }`
What could be the task of the statement debugger?

Among the keywords below, which one is not a statement?

What are the three important manipulations done in a for loop on a loop variable?

Consider the following code snippet
`function tail(o) { for (; o.next; o = o.next) ; return o; }`
Will the above code snippet work? If not, what will be the error?

One of the special feature of an interpreter in reference with the for loop is that

A linkage of series of prototype objects is called as :

Consider the below given syntax

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

The unordered collection of properties, each of which has a name and a value is called

What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?

0 h : 0 m : 1 s

JavaScript Code is written inside file having extension __________.

Local Browser used for validations on the Web Pages uses __________.

We can embed JS code inside HTML directly ?

Javascript is _________ language.

The object has three object attributes namely

What will be the step of the interpreter in a jump statement when an exception is thrown?

Consider the following code snippet function printArray(a) { var len = a.length, i = 0; if (len == 0) console.log("Empty Array"); else { do { console.log(a[i]); } while (++i < len); } } What does the above code result?

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 conditional expression is also called a

When an empty statement is encountered, a JavaScript interpreter

Consider the following code snippet while (a != 0) { if (spam>a == 1) continue; else a++; } What will be the role of the continue keyword in the above code snippet?

Consider the following code snippet function f(o) { if (o === undefined) debugger; } What could be the task of the statement debugger?

Among the keywords below, which one is not a statement?

What are the three important manipulations done in a for loop on a loop variable?

Consider the following code snippet function tail(o) { for (; o.next; o = o.next) ; return o; } Will the above code snippet work? If not, what will be the error?

One of the special feature of an interpreter in reference with the for loop is that

A linkage of series of prototype objects is called as :

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

The unordered collection of properties, each of which has a name and a value is called

What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?

0 h : 0 m : 1 s

Support mcqgeeks.com by disabling your adblocker.

Consider the following code snippet
`function printArray(a) { var len = a.length, i = 0; if (len == 0) console.log("Empty Array"); else { do { console.log(a[i]); } while (++i < len); } }`
What does the above code result?

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

Consider the following code snippet
`while (a != 0) { if (spam>a == 1) continue; else a++; }`
What will be the role of the continue keyword in the above code snippet?

Consider the following code snippet
`function f(o) { if (o === undefined) debugger; }`
What could be the task of the statement debugger?

Consider the following code snippet
`function tail(o) { for (; o.next; o = o.next) ; return o; }`
Will the above code snippet work? If not, what will be the error?

Consider the below given syntax

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