Basic And Variables MCQ question and answer in javascript with solution Page-3 section-1

21.

Consider the following snippet code

var string1 = ”123”;
var intvalue = 123;
alert( string1 + intvalue );

The result would be

A. 123246

B. 246

C. 123123

D. Exception

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22.
A function definition expression can be called

A. Function prototype

B. Function literal

C. Function definition

D. Function declaration

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23.
The property of a primary expression is

A. stand-alone expressions

B. basic expressions containing all necessary functions

C. contains variable references alone

D. complex expressions

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24.

Consider the following statements

var text = "testing: 1, 2, 3"; // Sample text
var pattern = /d+/g // Matches all instances of one or more digits

In order to check if the pattern matches with the string “text”, the statement is

A. text==pattern

B. text.equals(pattern)

C. text.test(pattern)

D. pattern.test(text)

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25.
The JavaScript’s syntax calling ( or executing ) a function or method is called

A. Primary expression

B. Functional expression

C. Invocation expression

D. Property Access Expression

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26.
What kind of an expression is “new Point(2,3)”?

A. Primary Expression

B. Object Creation Expression

C. Invocation Expression

D. Constructor Calling Expression

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27.
Which of the operator is used to test if a particular property exists or not?

A. in

B. exist

C. within

D. exists

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28.
Among the following, which one is a ternary operator?

A. +

B. :

C. –

D. ?:

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29.
“An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called

A. Properties

B. Prototypes

C. Lvalue

D. Definition

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30.
JavaScript is a _______________ language

A. Object-Oriented

B. High-level

C. Assembly-language

D. Object-Based

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21.
Consider the following snippet code
`var string1 = ”123”; var intvalue = 123; alert( string1 + intvalue );`
The result would be

Answer & Solution

22.
A function definition expression can be called

Answer & Solution

23.
The property of a primary expression is

Answer & Solution

24.
Consider the following statements
`var text = "testing: 1, 2, 3"; // Sample text var pattern = /d+/g // Matches all instances of one or more digits`
In order to check if the pattern matches with the string “text”, the statement is

Answer & Solution

25.
The JavaScript’s syntax calling ( or executing ) a function or method is called

Answer & Solution

26.
What kind of an expression is “new Point(2,3)”?

Answer & Solution

27.
Which of the operator is used to test if a particular property exists or not?

Answer & Solution

28.
Among the following, which one is a ternary operator?

Answer & Solution

29.
“An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called

Answer & Solution

30.
JavaScript is a _______________ language

Answer & Solution

Basic And Variables MCQ question and answer in javascript with solution

21. Consider the following snippet code var string1 = ”123”; var intvalue = 123; alert( string1 + intvalue ); The result would be

Answer & Solution

22. A function definition expression can be called

Answer & Solution

23. The property of a primary expression is

Answer & Solution

24. Consider the following statements var text = "testing: 1, 2, 3"; // Sample text var pattern = /d+/g // Matches all instances of one or more digits In order to check if the pattern matches with the string “text”, the statement is

Answer & Solution

25. The JavaScript’s syntax calling ( or executing ) a function or method is called

Answer & Solution

26. What kind of an expression is “new Point(2,3)”?

Answer & Solution

27. Which of the operator is used to test if a particular property exists or not?

Answer & Solution

28. Among the following, which one is a ternary operator?

Answer & Solution

29. “An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called

Answer & Solution

30. JavaScript is a _______________ language

Answer & Solution

21.
Consider the following snippet code
`var string1 = ”123”; var intvalue = 123; alert( string1 + intvalue );`
The result would be

22.
A function definition expression can be called

23.
The property of a primary expression is

24.
Consider the following statements
`var text = "testing: 1, 2, 3"; // Sample text var pattern = /d+/g // Matches all instances of one or more digits`
In order to check if the pattern matches with the string “text”, the statement is

25.
The JavaScript’s syntax calling ( or executing ) a function or method is called

26.
What kind of an expression is “new Point(2,3)”?

27.
Which of the operator is used to test if a particular property exists or not?

28.
Among the following, which one is a ternary operator?

29.
“An expression that can legally appear on the left side of an assignment expression.” is a well known explanation for variables, properties of objects, and elements of arrays. They are called

30.
JavaScript is a _______________ language