JavaScript

JavaScript

Professional Development

20 Qs

quiz-placeholder

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JavaScript

JavaScript

Assessment

Quiz

Computers

Professional Development

Hard

Created by

Pratima B

Used 2+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. JavaScript is a _______________ language.

a) Object-Oriented

b) High-level

c) Assembly-language

d) Object-Based

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2. What will be the output of the following JavaScript code?

var a=5 , b=1
var obj = { a : 10 }
with(obj) 
{
      alert(b)
}

a) 10

b) Error


c) 1

d) 5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. A conditional expression is also called a _______________

a) Alternative to if-else

b) Immediate if

c) If-then-else statement

d) Switch statement

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4. Which is a more efficient JavaScript code snippet?
Code 1 :

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

Code 2 :

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

a) Code 1

b) Code 2

c) Both Code 1 and Code 2

d) Cannot Compare

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5. What is a block statement in JavaScript?

a) conditional block

b) block that contains a single statement

c) both conditional block and a single statement

d) block that combines multiple statements into a single compound statement

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6. When an empty statement is encountered, a JavaScript interpreter __________

a) Ignores the statement


b) Prompts to complete the statement

c) Throws an error

d) Shows a warning

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

7. The “var” and “function” are __________

a) Keywords

b) Declaration statements

c) Data type

d) Prototypes

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