JoulestoWatts Business Solutions PHP Developer Interview Questions and Answers

Medium to Hard Questions

Q1. Basic questions from Resume
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Q1. Simple Coding Questions
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Q1. What is observable and promises
Ans. 
Observables and promises are both used for handling asynchronous operations in JavaScript.
• Observables are used for handling multiple values over time, while promises are used for handling a single value at a time.

• Observables can be cancelled, while promises cannot be cancelled.

• Promises have a built-in mechanism for error handling using the catch method, while observables use the error callback function.

• Observables are ...read more
Answered by AI
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Write a code for unique array

Node js vs express, var and const in js, cors

Q1. They asked about spring security. and asked one problem to solve
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It was good not too hard and not too easy.

Q1. 1.OOPs concepts
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Javascript & Angular question -
1. Write piece of code to display the array item using iteration method?
2. Write piece of code for API integration using services ?
3. What is the method of data transferring in Angular Components ?
4. What is Routing ?

Q1. Angular Question 1. What is the difference between Angular 8 and Angular 12 version ? 2. What is Call Back Function ? 3. What is Life Cycle Hooks ? 4. How to handle large data transferring from Backend ?
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Q1. Related to front end technologies like HTML, CSS, JS
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Q1. Basic questions on HTML, CSS, JS Focus on array questions and read methods of array before
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Q1. Managerial round questions based on scenario to check how you think/react on the particular situation
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