SaaS Labs Interview Questions and Answers

Q1. What are closures
Ans. 
Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to 'remember' the environment in which they were created

• They can access variables from their outer function even after the outer function has finished executing

• Closures are commonly used in event handlers and callbacks
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Q2. What is hoisting
Ans. 
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during the compilation phase.
• Variables and functions are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations are hoisted before variable declarations.
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Q1. Take me through your professional journey
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Q2. KPIs at your current job
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1 Coding Questions with 15MCQ's related Java Script (Hacker Rank)

Q1. Questions Core Javascript Topics
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Q2. A Design Question on Image upload service.
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Q1. Give a url which re-directs to n websites till it gives 200. Print all the url's.
Ans. 
Use a loop to follow redirects until reaching a 200 status code and print all URLs.
• Start with the initial URL and make a request to it.

• Check the status code of the response, if it's 200 then print the URL.

• If the status code is a redirect (300-399), follow the redirect URL and repeat the process.

• Continue this process until a 200 status code is received.
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Q2. Core Javascript and Database related questions.
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Q1. This round was taken by CTO, Interview was around generic discussion on project and one puzzle question
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Mcq testing programs

Q1. Selenium agile projects
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Q2. Nadcsndecnskncfkdsncfsdkncfksd
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