Get a list of the Front-end web developer interview questions and if you are an experienced one then it is for you. You can practise them before your interview, these questions will be very helpful for you. You can also take web development courses in Chandigarh if you are new to it.
1. What is Stringify?
The JavaScript object to string converter is called Stringify.
2. The elements of the CSS Box Model Are?
The CSS Box Model has four components.
- Content
- Padding
- Border
- Margin
3. What is the benefit of Srcset?
The UI is enhanced by this.
4. What is MySQL?
SQL is the standard language used by MySQL, a relational database management system, to manage its database. Like other databases, MySQL is structured like a table.
5. What is MongoDB?
A NoSQL database called MongoDB uses a structure resembling JSON to display the data pieces. Programmers must utilise MongoDB Query Language to make changes in MongoDB.
6. What is a ‘Version Control System’?
It tracks all modifications made to collection of data, making it feasible to roll back to a prior version if needed. This ensures that the team is working on the most recent version of the file.
7. What is Marquee in HTML?
- The webpage's text can be scrolled using the marquee.
- The text or image is automatically scrolled left, right, up, and down.
- To apply for a marquee, you must use tags.
8. What is the best way to include CSS Styling in HTML?
- When little or no styling is needed, you use inline CSS to style just one element at a time.
- External Style Sheet: An external style sheet is used when a style is applied to numerous HTML pages or elements.
- Internal Style Sheet: When one HTML document contains many elements and a unique style, an internal style sheet is used.
9. Explain Box Sizing Property.
The method used to determine a box's height and width is specified by the Box Sizing attribute.
- Content Box: Outside the box, borders and padding are added.
- Padding Box: You increase the element's padding and content by the same amount. The outer edge of the box is added.
- Border Box: Additional dimensions receive by the border, padding, and content.
10. What is the best way to remove Duplicates from a JavaScript Array?
- Using the filtering technique: To invoke the filter() function, three arguments are needed. The array, the current element, and the current element index are these.
- To save every element that is repeated in an empty array, utilise the for loop.
11. What Is JSX?
- JSX is a syntactic extension for JavaScript. In React, this phrase refers to the desired appearance of the user interface.
- JSX simplifies the code by eliminating the need for complex JS DOM structures, which facilitates comprehension and debugging.
12. What are React Extensions? Name a few of them.
- React is more than simply a user interface framework; the full application architecture is covered by a multitude of extensions.
- One of its features is server-side rendering.
- Backs the development of mobile applications.
- Added to the mix are Flux and Redux, among other things.
- Facebook's application architecture for creating web applications is called Flux.
- You can write all of your JavaScript for mobile apps with React Native.
13. What is Eager and Lazy Loading?
- Eager loading: Eager loading is the standard method for module loading. This should normally be saved for smaller applications.
- Lazy Loading: Main role to load feature modules dynamically whenever needed. As a result, the application runs more quickly. It is used in more extensive applications when not every module is needed at first.
14. What is CoffeeScript?
- CoffeeScript is a programming language that can compile JavaScript.
- It's an effort to provide an honest demonstration of JavaScript's advantages.
- By offering a more uniform syntax and avoiding the quirks of the JavaScript language, it also facilitates the development of JavaScript code.
15. How would you increase Page Performance?
- The HTML document needs to be cleaned up.
- Minimising external HTTP requests is possible.
- Add sprites, smaller images, and compressed images.
- Apply JavaScript at the bottom.
- Improve HTML, JavaScript, and CSS.
- CDN and caching.
Also Check: Front-End Web Developer Interview Questions for The Freshers