QodeYard Mern Full Stack Developer Interview Questions and Answers

Create a todo app with react and basic form validation

• Use React to create components for adding, displaying, and deleting todos

• Implement basic form validation using state and event handlers

• Utilize CSS for styling the app and make it user-friendly

Find the second most occurring character in a string.

• Create a frequency map of characters in the string

• Sort the characters based on their frequency

• Return the second most frequent character

Program to find sum and average of digits in a string, ignoring other characters.

• Iterate through each character in the string and check if it is a digit.

• If it is a digit, convert it to an integer and add it to the sum.

• Keep track of the count of digits to calculate the average at the end.

JavaScript is a programming language used for web development, while Node.js is a runtime environment for executing JavaScript code outside of a web browser.

• JavaScript is primarily used for client-side scripting, while Node.js is used for server-side scripting.

• JavaScript is executed in a web browser, while Node.js is executed on a server.

• Node.js provides additional modules and libraries for server-side development, suc...read more

Angular lifecycle consists of eight different phases.

• The first phase is ngOnChanges() which is called when a component receives data-bound input properties.

• The second phase is ngOnInit() which is called once the component is initialized.

• The third phase is ngDoCheck() which is called during every change detection run.

• The fourth phase is ngAfterContentInit() which is called after the component's content has been projecte...read more

ORM tool is used to map object-oriented programming language to a relational database management system.

• ORM tool helps in reducing the amount of code required to interact with the database.

• It provides an abstraction layer between the application and the database.

• ORM tool helps in managing the database schema and relationships between tables.

• It allows developers to work with objects instead of SQL statements.

• Examples of...read more

Form control build refers to the process of creating and customizing form controls in web development.

• Form controls are elements like text boxes, radio buttons, and dropdown menus that allow users to input data on a website.

• Developers can use HTML, CSS, and JavaScript to build and style form controls to fit the needs of their website or application.

• Form control build also involves adding validation and error handling t