Web Programming JavaScript Programming

Question 1

Which JavaScript method is used to add an element to the end of an array?

Accepted Answer

push()

Answer

The push() method adds one or more elements to the end of an array and returns the new length of the array.

Question 2

What does the === operator check in JavaScript?

Accepted Answer

Both value and type equality

Answer

The strict equality operator === checks that both the value and the data type of two operands are identical, without type coercion.

Question 3

Which keyword is used to declare a block-scoped variable in modern JavaScript?

Accepted Answer

let

Answer

The let keyword declares a block-scoped variable that is limited to the block, statement, or expression in which it is used.

Question 4

What does JSON stand for?

Accepted Answer

JavaScript Object Notation

Answer

JSON stands for JavaScript Object Notation, a lightweight text-based data interchange format derived from JavaScript object syntax.

Question 5

Which JavaScript method converts a JSON string into a JavaScript object?

Accepted Answer

JSON.parse()

Answer

JSON.parse() takes a JSON-formatted string as input and returns the corresponding JavaScript object, array, or value.

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