Techpearl Software Front end Developer Interview Questions and Answers

Q1. What is struct keyword
Ans. 
The struct keyword is used in programming languages to define a user-defined data type that contains multiple variables of different types.
• Structs are used to group related data together.

• They can have different types of variables, including other structs.

• Structs can be used to create complex data structures.

• They are commonly used in object-oriented programming languages.
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Q2. What is Class keyword
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The class keyword is used in object-oriented programming to define a blueprint for creating objects.
• The class keyword is used in languages like Java, C++, and Python.

• It allows the programmer to define the properties and behaviors of an object.

• Objects created from a class are called instances.

• Classes can have attributes (variables) and methods (functions).

• Inheritance allows classes to inherit properties and behaviors fr...read more
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Q1. They asked about OPS, Data design and coding pattern
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Q2. About my coding pattern
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Frontend development with react

DSA question and DBMS SQL

Q1. Basic concepts and your project
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It's normal question easy to cark

It was online test with 3 coding questions and 18 mcqs

Give you 5 problem in maths , string, sql etc

Q1. All the basic angular questions asked, routing, how to pass data from one component to another components
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Q2. What is the difference between Observable and promise
Ans. 
Observable is a stream of data that can be subscribed to, while Promise is a one-time operation that returns a single value.
• Observable can emit multiple values over time, while Promise can only return a single value.

• Observable can be cancelled, while Promise cannot.

• Observable is lazy, meaning it only starts emitting data when it is subscribed to, while Promise starts executing immediately.

• Observable can handle errors w...read more
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Q3. How to share I'd using route
Ans. 
To share ID using route in Angular, use route parameters.
• Define a route with a parameter in the route path, e.g. '/user/:id'

• Access the parameter value in the component using ActivatedRoute service

• Use the parameter value to fetch data or perform actions related to that ID
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Q4. Input and output in angular
Ans. 
Input and output are used to pass data between components in Angular.
• Input is used to pass data from parent component to child component.

• Output is used to emit events from child component to parent component.

• Input and Output are defined using decorators @Input and @Output respectively.

• Example:
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Q5. What is data binding in angular
Ans. 
Data binding is a way to connect data between the component and the view in Angular.
• Data binding allows for automatic synchronization of data between the component and the view.

• There are three types of data binding in Angular: Interpolation, Property binding, and Event binding.

• Interpolation is used to display component data in the view using double curly braces {{}}.

• Property binding is used to set the value of an eleme...read more
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Q6. Hook life cycle in angular
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Hooks are functions that allow you to execute code at specific points in a component's life cycle.
• ngOnInit() - called after the component is initialized

• ngOnChanges() - called when the component's input properties change

• ngDoCheck() - called during every change detection cycle

• ngAfterContentInit() - called after content is projected into the component

• ngAfterContentChecked() - called after every check of projected content

• n...read more
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They given me one assignment task where I had to show all users detail in the table using angular material. They provided me CRUD API link and I submitted it in few hours and got selected.

Q1. Salary discussion and previous organisation project details.
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