10+ Pinnacle Agritech Interview Questions and Answers

Pseudo classes and pseudo elements are CSS selectors that target specific states or parts of an element.

• Pseudo classes target specific states of an element, such as :hover, :active, and :focus.

• Pseudo elements target specific parts of an element, such as ::before and ::after.

• Pseudo classes and pseudo elements are denoted by a colon (:) or double colon (::) preceding the selector.

• They can be used to add special effects, such as changing the color of a link when it is hovered ov...read more

display: inline, block and inline-block are CSS properties that define how an element is displayed on a webpage.

• display: inline - element is displayed inline with the text and other inline elements. It does not start on a new line.

• display: block - element is displayed as a block-level element, starting on a new line and taking up the full width available.

• display: inline-block - element is displayed inline with the text and other inline elements, but can have a width and heigh...read more

Elements are the smallest building blocks of React UI, while components are made up of one or more elements.

• Elements are immutable and cannot be changed once created

• Components are reusable and can be composed of other components

• Elements are represented by tags, while components are represented by functions or classes

• Examples of elements include

  , , and , while examples of components include

  ,

position: absolute takes element out of normal flow, position: relative keeps element in normal flow but allows for positioning

• position: absolute removes element from normal flow and positions it relative to the nearest positioned ancestor

• position: relative keeps element in normal flow but allows for positioning relative to its normal position

• position: absolute elements are positioned relative to the nearest positioned ancestor, if none then relative to the initial containing...read more

There are several ways to create objects in JS, including object literals, constructor functions, and ES6 classes.

• Object literals: var obj = {key1: value1, key2: value2}

• Constructor functions: function Person(name, age) {this.name = name; this.age = age}; var person1 = new Person('John', 30)

• ES6 classes: class Car {constructor(make, model) {this.make = make; this.model = model}}; var car1 = new Car('Toyota', 'Corolla')

JS has various string methods to manipulate and extract information from strings.

• toUpperCase() - converts string to uppercase

• toLowerCase() - converts string to lowercase

• charAt() - returns character at specified index

• indexOf() - returns index of specified substring

• slice() - extracts a section of a string

• replace() - replaces specified substring with another string

• split() - splits a string into an array of substrings

• trim() - removes whitespace from both ends of a string

Function currying is a technique of transforming a function that takes multiple arguments into a sequence of functions that each take a single argument.

• Currying allows partial application of a function.

• It helps in creating reusable functions.

• Curried functions can be composed easily.

• It can be achieved using bind() or closures.

• Example: const add = x => y => x + y; add(2)(3) returns 5.

JS has two types of functions: named and anonymous.

• Named functions are declared with a name and can be called anywhere in the code.

• Anonymous functions are declared without a name and are usually assigned to a variable.

• Arrow functions are a shorthand for anonymous functions.

• Higher-order functions take one or more functions as arguments or return a function as a result.

Dynamic import is a feature in React that allows loading components or modules on demand.

• Used to improve performance by loading components only when needed

• Implemented using the 'import()' function

• Returns a Promise that resolves to the module

• Can be used with React.lazy() to lazy load components

New input types in HTML5 include color, date, email, number, range, tel, and more.

• Color: Allows users to select a color.

• Date: Provides a date picker for selecting dates.

• Email: Ensures that the input is a valid email address.

• Number: Restricts input to numeric values.

• Range: Allows users to select a value within a specified range.

• Tel: Ensures that the input is a valid telephone number.

Bubbling and capturing are two phases of event propagation in JavaScript.

• Bubbling is the default phase where the event starts from the innermost element and propagates outwards to the outermost element.

• Capturing is the opposite phase where the event starts from the outermost element and propagates inwards to the innermost element.

• Both phases can be used to handle events on parent and child elements.

• Event.stopPropagation() can be used to stop the event from propagating further...read more

z-index is a CSS property that controls the stacking order of elements on a webpage.

• z-index only works on positioned elements (position: absolute, position: relative, position: fixed, or position: sticky)

• Higher z-index values stack on top of lower ones

• Negative z-index values can be used to place elements behind other elements

• z-index can be used to create layered effects on a webpage

Canvas and SVGs are two different ways to create graphics on the web.

• Canvas is a bitmap-based drawing technology that allows for dynamic, scriptable rendering of 2D shapes and bitmap images.

• SVG is a vector-based drawing technology that allows for scalable, resolution-independent graphics.

• Canvas is best suited for complex, interactive graphics, while SVG is best suited for static, high-resolution graphics.

• Canvas is supported by all modern browsers, while SVG has some limitatio...read more