CustomerLabs Digital Solutions Interview Questions, Process, and Tips

Q1. What is web vitals ?
Ans. 
Web Vitals are a set of metrics related to user experience on websites.
• Web Vitals include metrics like Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift.

• They help developers understand and improve the performance and user experience of their websites.

• Google uses Web Vitals as a ranking factor for search results.
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Q2. What is cascading
Ans. 
Cascading refers to the process of styles being applied from parent elements to their child elements in CSS.
• In CSS, styles applied to a parent element will cascade down to its child elements unless overridden.

• Cascading allows for efficient styling by reducing the need to repeat styles for each element.

• Specificity and inheritance play a role in determining which styles take precedence in the cascade.
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Q3. What is recursion .write the code
Ans. 
Recursion is a programming technique where a function calls itself to solve a problem.
• Recursion involves breaking down a problem into smaller subproblems and solving them recursively.

• A base case is needed to stop the recursive calls and prevent infinite loops.

• Example: Factorial calculation using recursion - function factorial(n) { return n === 0 ? 1 : n * factorial(n - 1); }
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Q4. What is closures write code
Ans. 
Closures are functions that have access to their own scope, as well as the scope in which they were defined.
• Closures are created when a function is defined within another function and has access to the outer function's variables.

• Closures can access variables from the outer function even after the outer function has finished executing.

• Closures are commonly used in event handlers and callbacks to maintain state.
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Q5. What is state? the state is mutable or unmutable
Ans. 
State is the current condition or data of a component in a React application. It is mutable.
• State is an object that stores data relevant to a component.

• It can be updated using the setState() method.

• State is mutable, meaning it can be changed during the component's lifecycle.
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Javascript questions will be asked

Q1. General questions only like salary expectation and experience
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