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let, var, and const are all used to declare variables in JavaScript, but they have different scopes and behaviors.
let: block-scoped variable, can be reassigned
var: function-scoped variable, can be reassigned
const: block-scoped variable, cannot be reassigned, but its properties can be modified
All basics Of JS, HTML and CSS
Infosys interview questions for designations
I applied via Approached by Company and was interviewed before Feb 2023. There was 1 interview round.
I appeared for an interview in Aug 2017.
What people are saying about Infosys
I applied via Naukri.com and was interviewed in Nov 2021. There were 3 interview rounds.
Performance issues in Angular can be handled by optimizing code, reducing HTTP requests, and using lazy loading.
Optimize code by using trackBy in ngFor loops
Reduce HTTP requests by using caching and pagination
Use lazy loading to load only necessary components
Use AOT compilation to reduce load time
Avoid using ngIf with heavy computations
Use ChangeDetectionStrategy.OnPush to reduce change detection cycles
Custom directives in AngularJS allow you to create reusable components.
Create a new directive using the directive() method
Specify the directive's behavior using the link() method
Use the directive in HTML using its name as an attribute
Pass data to the directive using attributes
Example:
Angular is a JavaScript framework for building web applications with a modular architecture.
Angular uses a component-based architecture to build reusable UI components
It uses a declarative approach to define UI elements and their behavior
Angular provides a powerful set of tools for data binding, dependency injection, and routing
It follows the MVC (Model-View-Controller) pattern to separate concerns and improve maintain...
Inline elements do not start on a new line and only take up as much width as necessary, while inline-block elements can have a width and height set.
Inline elements do not start on a new line and only take up as much width as necessary
Inline-block elements can have a width and height set
Inline elements ignore top and bottom margins and padding, while inline-block elements respect them
Semantic HTML is a way of writing HTML that focuses on the meaning of the content rather than its appearance.
Semantic HTML uses tags that clearly define the purpose of the content, such as <header>, <footer>, <nav>, <article>, <section>, <aside>, <main>.
It helps improve accessibility for users with disabilities by providing more context to screen readers and other assistive tec...
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