Your question: Which of the following is true about JavaScript?

Which of the following is true about Typeof in JavaScript?

Q 9 – Which of the following is true about typeof operator in JavaScript? A – The typeof is a unary operator that is placed before its single operand, which can be of any type.

Which of the following is JavaScript used for?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

On which of the following is JavaScript based?

While JavaScript is influenced by Java, the syntax is more similar to C and is based on ECMAScript, a scripting language developed by Sun Microsystems. JavaScript is a client-side scripting language, which means the source code is processed by the client’s web browser rather than on the web server.

What is based on JavaScript?

In a nutshell, JavaScript is a dynamic scripting language supporting prototype based object construction. The basic syntax is intentionally similar to both Java and C++ to reduce the number of new concepts required to learn the language. … JavaScript can function as both a procedural and an object oriented language.

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What are the features of JavaScript?

Javascript Features

  • Light Weight Scripting language.
  • Dynamic Typing.
  • Object-oriented programming support.
  • Functional Style.
  • Platform Independent.
  • Prototype-based.
  • Interpreted Language.
  • Async Processing.

Is Typeof an array?

One type of object that is built-in to JavaScript is the array, and the typeof of an array is “object” : typeof [] === `object` // true . ECMAScript 5 introduced an Array.isArray() method to check for an array, since typeof will not be able to tell arrays from other objects.

Is JavaScript front end or backend?

JavaScript is used in both Back End and Front End Development. JavaScript is used across the web development stack. That’s right: it’s both front end and backend.

What is JavaScript and why is it important?

JavaScript is a programming language used primarily by Web browsers to create a dynamic and interactive experience for the user. Most of the functions and applications that make the Internet indispensable to modern life are coded in some form of JavaScript.

What is JavaScript and its advantages?

JavaScript is a dynamic computer programming language. It is lightweight and most commonly used as a part of the web pages, whose implementation allows a client-side script to interact with a user and to make dynamic pages. It is an interpreted programming language with object-oriented capabilities.

Is JavaScript client-side?

JavaScript is a client-side script, meaning the browser processes the code instead of the web server. … Like PHP and Java, JavaScript is an object oriented language that is multi-platform. Unlike Java (but still like PHP) it is a loosely, typed language.

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Is JavaScript written in C?

Specifically, most major JavaScript interpreters, either part of web browsers or standalone, are written in C or C++. … JavaScript is a standard/dialect based on ECMAScript, which specifies how code and syntax should run. The other languages – C/C++ create the ability to run JavaScript, i.e., a run time environment.

Why JavaScript is the best?

JavaScript is the better choice for desktop and mobile websites. Between JQuery, Angular, and React, JavaScript provides virtually endless capabilities for web programming. When a business or individual hires a programmer for a project, having an experienced developer is the key to a successful project.

What is special about JavaScript?

JavaScript is a flexible and powerful programming language that is implemented consistently by various web browsers. Along with HTML and CSS, it’s a core component of web technology. While HTML is responsible for structure and CSS is responsible for style, JavaScript provides interactivity to web pages in the browser.

How is JavaScript used in front end?

Interactivity. JavaScript is a very powerful tool that can do many things for a website. For one, it powers the site’s general interactivity. JavaScript makes it possible to build rich UI components such as image sliders, pop-ups, site navigation mega menus, form validations, tabs, accordions, and much more.

Is Python better than JavaScript?

On this count, Python scores far better than JavaScript. It is designed to be as beginner-friendly as possible and uses simple variables and functions. JavaScript is full of complexities like class definitions. When it comes to ease of learning, Python is the clear winner.

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