1500+ Javascript Questions - Set 250 [With Solutions]

Javascript Questions Set 250:

Quiz Mode

Javascript Questions

Set 250/259

What is the size of Redux?

2 KB

2000 KB

20 KB

100 KB

How does PhantomJS use YSlow?

Queries

Statements

Command Line Prompt

Command Line Script

________ is the tainted property of a window object.

Pathname

Protocol

Defaultstatus

Host

The initial value of a variable declared using var keyword is

undefined

none of these

The fundamental features of JavaScript are:

Single-threaded

Multi-threaded

Both 1 and 2

None of these

What is jQuery?

A JavaScript Library.

Structured Query Language.

High Level Language.

All of the above.

How many levels of nesting can a promise participate in?

More than two levels of nesting

At most three levels of nesting

At most four levels of nesting

No nesting

What is a closure?

Function objects

Scope where a function's variables are resolved

Both function objects and the scope where a function's variables are resolved

A function's return value

What is the purpose of script loading in web development?

Load scripts manually

Load scripts programmatically

Load scripts both manually and programmatically

Load scripts in a specific order

What is variable hoisting in JavaScript?

A variable can be used only without declaring it

A variable can be used only after it has been declared

A variable can be declared after it has been used

None of these

Quiz Mode

Qn. Sets

Javascript Questions Set 250:

Javascript Questions

What is the size of Redux?

Reveal Answer

Reveal Answer

How does PhantomJS use YSlow?

Reveal Answer

Reveal Answer

________ is the tainted property of a window object.

Reveal Answer

Reveal Answer

The initial value of a variable declared using var keyword is

Reveal Answer

Reveal Answer

The fundamental features of JavaScript are:

Reveal Answer

Reveal Answer

What is jQuery?

Reveal Answer

Reveal Answer

How many levels of nesting can a promise participate in?

Reveal Answer

Reveal Answer

What is a closure?

Reveal Answer

Reveal Answer

What is the purpose of script loading in web development?

Reveal Answer

Reveal Answer

What is variable hoisting in JavaScript?

Reveal Answer

Reveal Answer

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