Front End Developer Interview
Questions

1. Describe what CSS selector specificity is and how it works? This technical question asks you about a specific topic within the purview of a front end developer's job. Many of the questions you will be asked during an interview will be technical. To prepare for these, you should review the terminology, processes, and concepts used in this profession to be familiar with them. You can also practice questions like this so you'll know how to format your answers. As with any question, you should be prepared for a follow-up if the interviewer wants to explore the topic in more detail. Example #1: "A CSS selector is used to find the HTML elements you want to style. When using a CSS selector, specificity occurs if there are two or more CSS rules that point to the same element. The browser will select the rule that is more specific in defining the HTML element. This is based on a score created by the CSS selector."2. What methodologies do you use to ensure that your web application is user-friendly? One of the key elements front end developers need to include in their web designs is ease of use. It doesn't matter what content the web site contains or how robustly it performs if users can't easily access and navigate it. Incorporating ease of use and user-friendliness in your design will encourage the users to explore the site and take advantage of its features. Example #1: "Once I decide on a web site's basic structure, I turn my attention to how the users will navigate it. I design elements that make it easy to find your way around my site and locate the information you are searching for. I also access the site using various web browsers to determine what the user experience will be."3. Walk me through your workflow when you are creating a web page. An interviewer will ask you this question to better understand the process you use to create a web page. They want to ensure that you have a definitive process for doing this and that it aligns with the processes they use within their organization. This is an example of an operational question. During an interview for a front end developer's job, you can anticipate that most of the questions will be operational. The best way to prepare for these is to review the processes used in your work, the job description, and your resume. This will help you anticipate the questions that will be asked and be prepared to respond to them. Example #1: "While every project is different, the process I use to develop a web page is relatively consistent. I start by collaborating with the website designer in the information gathering, planning, and design phase. Once we've completed this, we begin writing and assembling the content. The next step is coding, in which the structure and functionality of the web site are developed. This was followed by testing, user reviews, and launch. The website then transitions to the maintenance phase in which content is updated, bugs are fixed, and security issues are patched."4. How would you integrate several different stylesheets into a website? As you're probably aware, a style sheet defines how the pages will appear within a website. Since style sheets have a great deal of overhead and require individual HTTP requests, developers often seek to minimize the number that they use. While one is ideal, many developers prefer two; one for the front end and one for the site's administrative side. Even so, you should be able to describe how you integrate several style sheets, assuming that this is the current practice the organization you are interviewing with uses. Example #1: "When I develop a web page, I try to minimize the number of stylesheets I use. This is because they are transparent to the users, and they impact performance. However, if I use multiple style sheets, I integrate them by concatenating them into a single sheet. The best way I've found to do this is by using Gulp and initiating npm to track the dependencies between the individual style sheets."5. When working on a web development project, what do you do to improve your code's maintainability? When interviewing for a front end developer position, you can anticipate that the interviewer will ask this common question. This is because there is a high turnover rate for developer roles because they are recruited to other organizations or promoted within the same organization. Therefore, other developers must be able to read, patch, and improve the code if the original developer is not available. Hiring managers will seek to confirm that you incorporate maintainability into your development process and that the techniques you use are similar to the ones their organization employs. Example #1: "Since I've been working in this role for several years, I've encountered situations in which I've been asked to work with code which has been developed by someone else. This has taught me to incorporate maintainability into my development process. Techniques I use include iterative development, such as Agile or Waterfall, making my code readable, and documenting everything. Other techniques include single responsibility, the law of Demeter, and the open/closed principle. I have never been contacted by a developer who assumed responsibility for my code to ask me to help them understand it."6. How has working with the 'this' keyword changed in JavaScript ES6? As a front end developer, you are expected to keep up with changes in your profession and stay current with the technologies you use. Being able to describe and discuss these is a key element of any interview. You may also want to formulate opinions as to whether these changes are beneficial and be able to describe how they impact the work you do. Example #1: "Fundamentally, working with the 'this' keyword in JavaScript ES6 hasn't changed that much at all. What has changed are the rules for scoping and how specific the variables are. These changes were made to correct the vagueness around which 'this' references. By adding specificity and additional variables, 'this' is now easier to work with and requires less debugging."

Front End Developer Interview Questions

Describe what CSS selector specificity is and how it works?

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Front End Developer Interview
Questions