SpectroCoin FE

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Test Your Web Development Knowledge

Welcome to the SpectroCoin FE quiz! Test your knowledge on JavaScript, HTML, and web development concepts with a series of multiple-choice questions.

Challenge yourself with questions like:

Understanding JavaScript data types
HTML syntax and structure
JavaScript functionalities

15 Questions4 MinutesCreated by CodingExplorer721

What is hoisting

Process of evaluating a string literal containing placeholders, yielding a result in which the placeholders are replaced with their values.

Process when interpreter moves declarations of functions, variables or classes to the top of their scope.

Process when interpreter removes comments from the code to avoid showing them to the user.

Process when compiler translates source code into a machine-language instructions.

What will new Date().getTime() return

Number of milliseconds since January 1, 1970, or epoch

Number of milliseconds since January 1, 2000.

Number of seconds since January 1, 1970, or epoch

Number of seconds since January 1, 2000.

What is the difference between primitive and reference data types in javascript?

Primitive data types have a short predefined list of possible values, while reference data types can have any value

Primitive data types can be changed during code execution, while reference data types cannot

Primitive data types are the data defined by developer, while reference data types are defined by language

Primitive data types create a separate value copy when being copied, while reference data types create a reference and both copies change value when one of them is edited

What is variable scope?

Availability of variable in certain parts of code

Memory allocated for that variable

Lifespan of variable availability

Type of variable's data

What is "this" keyword in javascript

"this" refers to the page that javascript is run in the browser

"this" refers to a object from where it was caller

"this" refers to a file from which it was caller

"this" refers to a last defined variable

What is the difference between == and === operators in javascript

== compares value and data types, while === throws an error

== assigns a value changing it's type, while === is a comparison operator

They have no difference, == was used in old javascript versions, while === is used in ES6 and newer versions

== compares values changing their type to match, while === compares both value and it's type

What is a

tag in HTML

Container used to only group images

Container used to only group script tags

Generic block level container for grouping content

Container used to only group styles

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