Northcorp Software UI Developer Interview Questions and Answers

To reverse a string in Javascript, we can use the built-in reverse() method.

• Convert the string to an array using split() method

• Use the reverse() method to reverse the array

• Convert the reversed array back to a string using join() method

Inline elements do not start on a new line and only take up as much width as necessary, while inline-block elements can have a width and height set.

• Inline elements do not start on a new line and only take up as much width as necessary

• Inline-block elements can have a width and height set

• Inline elements ignore top and bottom margins and padding, while inline-block elements respect them

Semantic HTML is a way of writing HTML that focuses on the meaning of the content rather than its appearance.

• Semantic HTML uses tags that clearly define the purpose of the content, such as <header>, <footer>, <nav>, <article>, <section>, <aside>, <main>.

• It helps improve accessibility for users with disabilities by providing more context to screen readers and other assistive tec...read more

Using a for loop to find a specific value in an array of strings.

• Use a for loop to iterate through the array

• Check each element to see if it matches the desired value

• Return the index of the matching element or -1 if not found

To find array values using for loop

• Declare a variable to store the sum of array values

• Use a for loop to iterate through the array

• Access each element using array[index] syntax

• Add the element value to the sum variable

• Return the sum variable

Authentication verifies a user's identity, while authorization determines what a user can access.

• Authentication confirms a user's identity through credentials like username and password.

• Authorization controls access to resources based on the authenticated user's permissions.

• Example: Logging into a website (authentication) and then being able to view/edit specific pages based on your role (authorization).

To render a list in React, use map() function to iterate over an array of data and return a list of components. State is mutable data managed within a component, while props are immutable data passed from parent to child components.

• To render a list in React, use map() function to iterate over an array of data and return a list of components.

• Example: const items = ['item1', 'item2', 'item3']; items.map(item =>

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Webpage optimization techniques include minifying CSS and JS files, optimizing images, using asynchronous loading for scripts, and reducing render-blocking scripts.

• Minify CSS and JS files to reduce file sizes and improve loading times.

• Optimize images by compressing them and using the correct file format (e.g. JPEG for photographs, PNG for graphics).

• Use asynchronous loading for scripts to prevent them from blocking the ...read more

Use SCSS to apply background color to nested li elements and utilize mixins.

• Use nesting to target the li elements within a parent element

• Apply background color to the 2nd li element using the :nth-child() selector

• Define and use mixins to reuse styles across the codebase

To fix cumulative layout shift issues, ensure all images and media have dimensions specified in HTML, use CSS aspect ratio boxes, and prioritize loading critical resources.

• Specify dimensions for all images and media in HTML to prevent layout shifts.

• Use CSS aspect ratio boxes to reserve space for images before they load.

• Prioritize loading critical resources to avoid sudden layout changes.

let, var, and const are all used to declare variables in JavaScript, but they have different scopes and behaviors.

• let: block-scoped variable, can be reassigned

• var: function-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified