InfoAxon Technologies Web Developer Trainee Interview Questions, Process, and Tips

Doctype defines the version of HTML being used and helps browsers render the page correctly.

• Doctype declaration is used to specify the version of HTML being used in the document.

• It helps browsers to render the web page correctly by triggering standards mode.

• If the doctype is removed, browsers may render the page in quirks mode which can lead to inconsistent display.

• For example, without a doctype, some CSS styles may no

Meta tags are HTML tags that provide metadata about a webpage. They are used to provide information about the page to search engines and browsers.

• Meta tags are placed in the head section of an HTML document.

• Common types of meta tags include meta description, meta keywords, and meta viewport.

• Meta description provides a brief summary of the webpage's content.

• Meta keywords are used to specify keywords relevant to the webp...read more

z-index is a CSS property that controls the stacking order of elements on a webpage.

• z-index determines which elements appear in front or behind other elements

• Higher z-index values bring elements to the front

• z-index only works on positioned elements (position: absolute, position: relative, or position: fixed)

• z-index can be positive, negative, or zero

• Elements with higher z-index values will overlap elements with lower va

Viewport is the visible area of a web page in a web browser.

• Viewport determines how much content can be seen without scrolling.

• It is defined by the size of the browser window.

• Viewport can be adjusted using meta tags in HTML.

• Responsive web design uses viewport to optimize layout for different devices.

There are three ways to link CSS: inline, internal, and external. Inline has the highest priority.

• Inline CSS is applied directly to an HTML element using the 'style' attribute.

• Internal CSS is defined within the 'style' tags in the head section of an HTML document.

• External CSS is linked to an HTML document using the 'link' tag with the 'rel' attribute set to 'stylesheet'.

• Inline CSS has the highest priority, followed by

CSS box model is a design concept that describes how elements are rendered on a web page.

• The CSS box model consists of four main components: content, padding, border, and margin.

• The content area is where the actual content of the element is displayed.

• Padding is the space between the content and the border.

• Border is a line that surrounds the padding and content.

• Margin is the space between the border and other elements o...read more

Margin is the space outside an element, while padding is the space inside an element.

• Margin is used to create space between elements, while padding is used to create space within an element.

• Margin affects the positioning of an element in relation to other elements, while padding affects the content within an element.

• Negative margin can be used to overlap elements, while negative padding is not possible.

• Margin is transp...read more

To include Bootstrap into an HTML document, link the Bootstrap CSS and JavaScript files in the head section.

• Download the Bootstrap CSS and JavaScript files from the official website.

• Place the CSS file link inside the head section using the link tag.

• Place the JavaScript file link at the end of the body section using the script tag.

• Ensure the file paths are correct and relative to the HTML document.

Bootstrap grid system is a responsive grid system that allows developers to create responsive layouts for web pages.

• Bootstrap grid system is based on a 12-column layout.

• It uses CSS classes to define the layout structure.

• Developers can easily create responsive designs by utilizing the grid system.

• The grid system provides different classes for different screen sizes, such as 'col-sm' for small screens and 'col-lg' for la

Containers are lightweight, isolated environments that package software and its dependencies for easy deployment and scalability.

• Containers provide a consistent and reproducible environment for running applications.

• They encapsulate an application and its dependencies, including libraries, binaries, and configuration files.

• Containers are portable and can run on any system that supports containerization.

• They offer effici...read more

To declare a variable in JavaScript, use the 'var', 'let', or 'const' keyword followed by the variable name.

• Use 'var' to declare a variable with function scope

• Use 'let' to declare a variable with block scope

• Use 'const' to declare a constant variable

• Example: var age = 25; let name = 'John'; const PI = 3.14;

Achieve responsiveness in web page by using media queries, flexible layouts, and fluid images.

• Use CSS media queries to apply different styles based on screen size

• Create flexible layouts using CSS Grid or Flexbox

• Use relative units like percentages and ems instead of fixed pixels

• Optimize images for different screen sizes using srcset and sizes attributes

• Test responsiveness across different devices and browsers