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Top 100+ Less (stylesheet Language) Interview Questions And Answers - May 31, 2020

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Top 100+ Less (stylesheet Language) Interview Questions And Answers

Question 1. Explain What Is Less?

Answer :

LESS is dynamic fashion sheet generating language. LESS is a CSS pre-processors and extends CSS with dynamic conduct. It lets in for variables, mixins, operations and features. LESS runs on server facet and patron facet each.

Question 2. Explain How To Create Less File And Where To Store It And Compile It?

Answer :

Creating or storing LESS report is much like developing/storing CSS document. A new LESS record can be created with a .Less extension, or you may rename existing .Css document to .Less file. You can write LESS code with existing CSS code.

The fine manner of creating it internal ~/content material/ or ~/Styles/ folder.

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Question 3. In What Ways Less Can Be Used?

Answer :

Following are the ways :

Via npm LESS can be used on the command line
Download as a script report for the browser
For 0.33 celebration gear, it's far used
Question 4. How Variable Is Represented In Less?

Answer :

LESS lets in variables to be defined. In LESS, the variable is represented as @ sing. While, variable challenge is achieved with a : (colon) sing. The values of the variables are inserted into the CSS output report as well as minified file.

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Question five. Explain How Mixins Is Useful?

Answer :

Mixins enable embedding all the properties of a class into every other class by using together with the class call as one in all its properties. It is just like variables but for complete instructions.

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Question 6. Explain How Can Set Code In A Watch Mode When You Run Less.Js In An Html5 Browser?

Answer :

If you run LESS.Js in an HTML5 browser, it'll use neighborhood storage to cache the generated CSS. However, from the developer point of view they can not see the modifications they made immediately. In order to see your adjustments right away, you may load application in development and watch mode by way of following JavaScript.

Question 7. Explain What Is The Meaning Of Nesting In Less Programming?

Answer :

Nesting in LESS is clustering of statements internal other statements, so it paperwork a set of related code. In other words while we add a code snippet and add another code inside it, then that code snippet is referred to as nesting.

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Question 8. Mention What Are The Color Channel Functions Used In Less?

Answer :

coloration channel characteristic utilized in LESS are as:

hue
saturation
hsvhue
saturation
hswalue
purple
green
blue
alpha
luma
luminance
Question 9. Explain What Is Data-uri In Less?

Answer :

In CSS, Data URI’sis one of the great technique, it lets in builders to avoid external image referencing and instead embed them without delay into a stylesheet. Data URIs are the remarkable way to reduce HTTP requests

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Question 10. Explain What “supply Map Less Inline”?

Answer :

The “Source Map Less Inline” choice suggests that we have to include all the CSS documents into the sourcemap. Which manner that you most effective need your map document to get to your unique source.

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Question eleven. Explain What Is The Use Of Extend “all” In Less?

Answer :

When you specify all key-word ultimate in an amplify argument, it tells LESS to fit that selector as part of every other selector.

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Question 12. Explain What Is “strictimports” In Less?

Answer :

The strictImports controls whether the compiler will permit a @importinside of both @media blocks or other selector blocks.

CSS3 Interview Questions
Question thirteen. List Out The Differences Between Less And Sass?

Answer :

Each style-sheet language is good in their perspective and use; but there are few differences in their utilization.

LESS

LESS makes use of JavaScript and processed at client-facet
Variable names are prefaced with the @symbol
LESS does not inherit multiple selectors with one set of properties
LESS does no longer paintings with “unknown” units neither it returns syntax mistakes notification for incompatible gadgets or math’s related syntax error.
Sass

Sass is coded in Ruby and for this reason processed to server-facet
Variable name are prefaced with $ image
Sass inherits more than one selectors with one set of homes
Sass lets in you to work with “unknown” units also returns a syntax error notification for incompatible units.
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Question 14. What Are The Similarities Between Less And Sass?

Answer :

Between LESS and Sass the similarities are:

Namespaces
Color capabilities
Mixins and parametric mixins
Nesting skills
JavaScript critiques
Question 15. Explain What Is The Use Of &combinator?

Answer :

&combinatorconcatenates nested selector with the parent selector. It is useful for Pseudo instructions consisting of :hover and :recognition.

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Question 16. Explain What Is The Use Of Operations In Less?

Answer :

Operations may be used for performing functions like:

Simple Mathematical operators: +, – , *, /
Color capabilities
Math functions
Any length or colour variable can be operated upon.
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Question 17. Explain What Is The Use Of Escaping?

Answer :

Following are the usage of escaping in LESS:

When you need to output CSS that isn't valid CSS syntax
Proprietary syntax not diagnosed through LESS
LESS compiler will throw an blunders if not used
Simple prefix with ~ image and installed quotes
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Question 18. What Does Less Elements Contains?

Answer :

Less elements incorporate usually used mixins like:

.Gradient
.Rounded
.Opacity
.Container-shadow
.Internal-shadow
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Question 19. List Out Alternatives Against Less?

Answer :

SASS: Syntactically Awesome Stylesheets
SCSS: Version.2 of SASS
Stylus
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Question 20. Explain How You Can Invoke The Compiler From The Command Line?

Answer :

You can invoke the compiler from the command line in LESS as

$ lessc styles.Less

This will output the compiled CSS to stdout; you could then redirect it to a report of your desire

$ lessc patterns.Less > styles.Css

CSS Advanced Interview Questions
Question 21. What Is The Use Of E () Function?

Answer :

With the help of e()feature you could break out a value in order that it passes straight via to the compiled CSS, without being observed with the aid of the LESS compiler.

Question 22. Explain How You Can Pre-compile Less Into Css?

Answer :

To pre-collect LESS into CSS you may use:

Run less.Js the usage of Node.Js : By the use of the Node.Js JavaScript framework you may run the much less.Js script out of doors the browser.

Use lessphp: For the implementation of the LESS compiler written in PHP, lessphp is used.

Use online Compiler: Use online compiler for short compilation of LESS code without installing a compiler

Less. App (for Mac customers): Less.App is a unfastened device for Mac customers, this tool vehicle compiles them into CSS files.

SASS (Syntactically Awesome Style sheets) Tutorial
Question 23. Explain How Merge Function Is Used In Less?

Answer :

For aggregating values from multiple houses right into a area or comma separated listing under a unmarried belongings LESS is used. It is useful for homes which include rework and historical past.

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Question 24. How Can You Create A Loop Structures In Less?

Answer :

A mixin can call itself in LESS. Such recursive mixins, whilst mixed with Pattern matching and Guard Expressions, may be used to create numerous iterative/loop structures.

Example:

.Loop(@counter) when (@counter > 0) 
  .Loop((@counter - 1));    //
subsequent iteration
  width: (10px * @counter); // code for every
new release

div 
  .Loop(5); // release the loop

Output:
div 
  width: 10px;
  width: 20px;
  width: 30px;
  width: 40px;
  width: 50px;


HTML 5 Interview Questions
Question 25. Why Do We Need Parametric Mixins In Less?

Answer :

Parametric mixinsare equal like general mixins. The most effective difference is that parametric mixins take parameters like capabilities in JavaScript. After figuring out parameters to the mixins, you get greater manipulate over mixins.

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