Zidio Development Interview Questions and Answers

In JavaScript, '==' checks for value equality, while '===' checks for both value and type equality.

• '==' performs type coercion, converting types to compare values.

• '===' checks both value and type, ensuring they are identical.

• Example of '==': 5 == '5' returns true due to type coercion.

• Example of '===': 5 === '5' returns false as types differ (number vs string).

• '==' can lead to unexpected results, while '===' is mor...read more

var, let, and const are used for variable declaration in JavaScript, differing in scope, hoisting, and mutability.

• var: Function-scoped or globally scoped; can be redeclared and updated.

• Example: var x = 10; var x = 20; // x is now 20

• let: Block-scoped; cannot be redeclared in the same scope but can be updated.

• Example: let y = 10; y = 20; // y is now 20

• const: Block-scoped; cannot be redeclared or updated once assigne...read more

Web designers use various tools for design, prototyping, coding, and collaboration to create effective and visually appealing websites.

• Adobe XD: A popular tool for wireframing and prototyping.

• Figma: A collaborative interface design tool that allows real-time editing.

• Sketch: A vector graphics editor primarily used for UI/UX design.

• Photoshop: Used for image editing and creating graphics for web.

• HTML/CSS: Fundamental...read more

Web designing is the process of creating visually appealing and user-friendly websites through layout, graphics, and interactive elements.

• Involves layout design, color schemes, and typography to enhance user experience.

• Utilizes tools like Adobe XD and Figma for wireframing and prototyping.

• Focuses on responsive design to ensure compatibility across devices (e.g., mobile, tablet, desktop).

• Incorporates HTML, CSS, and...read more

let, var, and const are JavaScript keywords for variable declaration with different scopes and mutability rules.

• var: Function-scoped or globally-scoped, can be redeclared and updated. Example: var x = 10; var x = 20;

• let: Block-scoped, can be updated but not redeclared in the same scope. Example: let y = 10; y = 20; // valid

• const: Block-scoped, cannot be updated or redeclared. Must be initialized at declaration. Ex...read more

map() creates a new array from results, while forEach() executes a function on each element without returning a new array.

• map() returns a new array: const doubled = arr.map(x => x * 2);

• forEach() returns undefined: arr.forEach(x => console.log(x));

• map() is chainable: const result = arr.map(x => x * 2).filter(x => x > 5);

• forEach() is used for side effects, like logging or modifying external variables.

I'm passionate about web development because it combines creativity and technology to create impactful user experiences.

• I love the challenge of solving problems through code, like optimizing website performance.

• Web development allows me to express my creativity, such as designing user-friendly interfaces.

• I enjoy the collaborative aspect, working with designers and developers to bring projects to life.

• The constant ...read more

Git is a version control system that tracks changes in code, enabling collaboration and version management.

• Git allows multiple developers to work on the same project simultaneously without conflicts.

• It uses a local repository to track changes, which can be synced with a remote repository (e.g., GitHub).

• Common commands include 'git init' to create a repository, 'git add' to stage changes, and 'git commit' to save c...read more