Last updated on Nov 07, 2023
User Interface Developers, undoubtedly, belong at the top of the hierarchical chain of the IT industry owing to their complex role and high paying salary. A UI Developer must consider many factors to develop a web application or software. One primary requirement of the job is creativity. A User Interface Developer employs logical thinking and a few psychological concepts to stimulate audio and visual senses to create a software that is understandable, easy to use and pleasing to the eye. The job also includes technical knowledge and skill as the core to designing and developing a software that is not only flawless in design but also informative in the way that it provides the user with the solution he is looking for to deliver the best User Experience.
Below is a curated list of some of the User Interface Developer questions most frequently asked by the interviewers in a UI Developer Interview process, including Markup languages, HTML, Semantic elements, Scripting, Storage and many other questions covering concepts from a Beginner to an Advanced level.
Ans : UI Developer is responsible for creating functional User Interfaces that are convenient, meet the user’s needs and are easy to access, understand and interact with to receive or give a response.
Ans: UI Developer is mostly responsible with the appearance and design of the app, the aesthetics. Colours, patterns, designs and other elements that make an application appear attractive to the end user. On the other hand, a UX Developer is responsible for the technicalities that ensure the functioning and expected performance of an app to deliver enhanced user experience.
Ans : The UI Developers focus on making an application user-friendly and engaging while the Front-end Developers test and work on the client-side interface in detail to ensure its proper functioning.
Ans : UI Developers must possess two sets of skills:
Hard Skills - HTML, CSS, JavaScript, Wireframing & Prototyping, Coding, Interaction Designing, Visual Communication.
Soft Skills - Curiosity, Analytics, Communication, Logical thinking, Creativity, and Copywriting.
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Ans : Page load time can be reduced by trimming down JavaScript parsing, minimizing redirects, and compressing files.
Ans : The HyperText Markup Language or HTML is a markup language that helps create a basic structure for a webpage to display the required content and other elements.
Ans : Semantic HTML or Semantic Markup, are tags that classify the text and separate it from other Semantic elements to clarify the intent of the content in the webpage and the webpage itself.
Ans : A tag is used to bold the selected words and are mostly for conventional writing formats whereas, the tag stresses on the importance of the words and emphasizes not only the word but also highlights the semantics.
Ans : Absolute, Fixed, Relative, Inherent and Static are position property attributes.
Ans : Static - an undeclared position for an element automatically files the element as static in the CSS. Static positioning is the default position.
Ans : Web Accessibility is a feature that enables the differently-abled persons to comprehend, interact, and navigate the web.
Ans : In JavaScript, Hoisting allows all declarations to be moved to the top of the scope before code execution, irrespective of where the functions and variables are declared.
Ans : HyperText Markup Language or HTML is SGML based while Extensible HyperText Markup Language XHTML is XML based. All content in the HTML can be put in the body but it needs to be separated into blocks in XHTML. In short, XHTML is more intensive on structure, conditions and format than HTML.
Ans :
Ans : A Window object is the first object of the DOM hierarchy. A Document object is within the Window object. HTML elements are accessed through the Document object.
Ans : Compilers are programs that convert a programming language code into machine code. Considering HTML is a Markup language and not a programming language, it does not require a compiler.
Ans : Floats help navigate elements to the sides and generally include one of the following four values:
Ans : The plugins available in the Bootstrap jQuery plugin library include:
Alert
Affix, Button, Carousel, Collapse, Dropdown, Modal, Popover, Scrollspy, Tab, Tooltip
Ans : The CSS class: class=”col-md-14 col-lg-8” should be used.
Ans : To verify if a variable is set the command !isset($var); can be used.
Ans : The require () function stops executing the script when an error is encountered but in the include () function the application continues without a fatal error.
Ans : CSS Resets remove all the default styling on the elements in the browser while a Normalize CSS does not remove the default styling settings.
Ans : Asynchronous Java Script And XML or AJAX requests that provide the user the required data. AJAX calls connect with the servers by using XMLHttpRequests to exchange the data.
Ans : The new HTML5 tags are not supported by IE7 and IE8. Using HTML5 tags in IE7 or IE8 would cause errors and result in glitches. Instead, html5shiv.js can be used to run the tags in older browsers.
Ans :Some effects methods used in jQuery include:
Ans :The filters used in AngularJS are
Ans : A website’s assets can be optimized in the following ways:
Ans :The DOCTYPE determines the HTML type used on a webpage and a browser uses DOCTYPE to determine how the page is to be rendered or displayed.
Ans :Standards mode was invented to adapt to the modern HTML and CSS specifications whereas, in Quirks mode, the body element is the primary element. Quirks mode is for older browsers.
Ans :One major limitation faced by XHTML is the lack of browser support. Many browsers cannot parse XHTML as XML, making it a less used Markup language.
Ans : Comments starting with “*” and ending with “->” are used to prevent a code from being recognized by the browser.
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Ans :
Ans :The following mistakes cause the image or link to be displayed incorrectly:
Missing href, src, or alt text.
Ans :Bulleted lists are accompanied by the unordered list
Ans :A website that functions at any screen resolution and on any system or device such as PC, mobile, laptop, etc., and adjusts to a readable size and is understandable by a user is a responsive website.
Ans :To access a get request URL parameter, the Php is: $_GET[“turkey”]
Ans :The new HTML elements are graphic tags, semantic tags, and multimedia. Semantic tags include figure, header, footer, and mark. Graphic tags include audio and canvas.
Ans :When writing in JavaScript, a developer is required to follow the consistent variables, function names, capitalization of letters, and other identifiers to avoid errors in functioning.
Ans : HTML layout specifies how the webpage is to be arranged. The HTML5 elements used to define the parts of a webpage are
Ans :Use the JavaScript “find” method. The specific objects can be found by using the code given below:
let customers = [
{ id: 0, name: 'jane' },
{ id: 1, name: 'tim' },
{ id: 2, name: 'maria' }
];
let customer = customers.find(cust => cust.name === 'maria');
console.log(customer);
--> { id: 2, name: 'maria' }
Ans. You can follow the following ways to improve the performance of a web page.:-
Ans. To declare a new variable in PHP equal to the number 5 is $number = 5;
Ans. The below reasons will let you know about the importance of Semantic elements.:-
Ans.
Inline: The inline elements in HTML do not begin with the new line; instead, they occur in the same line. In this element, we can add some space to the left and right on it instead of adding space to the bottom & top padding to the page. Examples include span, strong, mark, etc.
Inline-block: The inline-block elements are similar to inline elements, but they allow the spaces on all sides.
Block: The element block will always begin with a new line. It fills both the left and right spaces of the web page by adding padding and margins. Examples of block elements include div, p, etc.
Ans. CSS means Cascading Style Sheets which describe the web pages’ styles which consist of fonts, colors, layouts, etc. We can also define variations and layouts for different types of screens. Moreover, CSS is also useful for XML-based markup languages apart from HTML.
Ans. HTML tags define the format of content and its display on the web browser. These tags include the components like content, open, and ending tags. On the other hand, HTML elements inform the web browser how to display the text. Further, these elements will become tags when we use brackets <>.
Ans. The following are a few of the many benefits of CSS.
Ans. Event bubbling is a procedure of event propagation inside the HTML DOM API. As the event is launched, the element bubbles up the DOM tree. Here we call the child node first, then the parent node. On the other hand, event capturing is different from event bubbling. It is the opposite of event bubbling, where the parent node is called first, then the child node.
Ans. The tag is an element used to give an Italic look at the text, whereas the tag is an emphasis element that defines the emphasized text.
Ans. The CSS Box Model is a type of box that wraps the HTML element. It consists of the assets like actual content, borders, margin, padding, etc. It is all about the design and layout that helps develop a web page’s structure and design.
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