TCS Angular Developer Interview Questions and Answers

Q1. Life cycle hooks, migration plan, features remived in html5
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Q1. Agile methodology
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Q1. Life cycle hooks
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Q2. Input/output decoraters
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Q1. What are the ES6 features?
Ans. 
ES6 features are modern JavaScript syntax enhancements introduced in ECMAScript 2015.
• Arrow functions for concise syntax: const add = (a, b) => a + b;

• Let and const for block-scoped variables: let x = 5; const y = 10;

• Template literals for string interpolation: const name = 'Alice'; console.log(`Hello, ${name}!`);

• Classes for object-oriented programming: class Person { constructor(name) { this.name = name; } }

• Destructuring...read more
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Q2. Difference between Normal Function and Arrow Function?
Ans. 
Normal functions are defined using the function keyword, while arrow functions are defined using the => syntax.
• Normal functions are hoisted, while arrow functions are not.

• Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.

• Arrow functions are more concise and have implicit return.

• Arrow functions cannot be used as constructors.

• Arrow functions are not suitable for methods within ob...read more
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Q3. Angular bootstrapping process?
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Angular bootstrapping process initializes the Angular application by loading the root module and compiling the component templates.
• Angular application is bootstrapped by calling the 'platformBrowserDynamic().bootstrapModule()' method in the main.ts file.

• The 'AppModule' is typically the root module of the Angular application.

• During bootstrapping, Angular creates the component tree, compiles the component templates, and ...read more
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Q4. List of lifecycle hooks?
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Angular lifecycle hooks are methods that allow you to tap into specific points in a component's lifecycle.
• ngOnChanges

• ngOnInit

• ngDoCheck

• ngAfterContentInit

• ngAfterContentChecked

• ngAfterViewInit

• ngAfterViewChecked

• ngOnDestroy
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Q5. What is a strict operator and rest operator
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Strict operator (!) is used to check if a value is truthy or falsy. Rest operator (...) is used to collect multiple arguments into an array.
• Strict operator (!) checks if a value is truthy or falsy, for example: if (!value) { // do something }

• Rest operator (...) collects multiple arguments into an array, for example: function sum(...args) { return args.reduce((acc, val) => acc + val, 0); }
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Q6. What is NgViewInit()
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NgViewInit() is a lifecycle hook method in Angular that is called after the component's view has been fully initialized.
• NgViewInit() is used to perform tasks that require the view to be fully initialized, such as initializing data-bound properties or setting up event listeners.

• It is commonly used to fetch data from a backend API and update the view accordingly.

• Example: ngOnInit() { this.http.get('api/data').subscribe(d...read more
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Given Angular test to show code for promises and observables

Q1. JavaScript 1. let vs var 2. shallow copy vs deep copy 3. timeout and more basics in JS Angular 1. Pipes 2. Dependency Injection 3. Routing
Ans. 
A set of questions related to JavaScript and Angular for an Angular Developer interview.
• let vs var: let is block-scoped while var is function-scoped

• shallow copy vs deep copy: Shallow copy creates a new reference to the original object, while deep copy creates a new object with its own copy of all nested objects

• timeout: Used to delay the execution of a function or code block for a specified amount of time

• Pipes: Used for...read more
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Q1. One-on-one with Hiring Manager 1. Why are you looking for a new opportunity? 2. What do you have to improve? 3. How can you handle delivery scenario?
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Q1. 1. Preferred work location 2. Date of joining HR: In my case, HR didn't answer my query after releasing the offer.
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Q1. Just asks what work you did and challenges faced that's it
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Q1. Basic salary negotiation and behaviour test
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