Why is JavaScript so popular?

JavaScript is currently one of the most popular programming languages since it can run on the browser or on the server. It is compatible with most devices since it can run using the JavaScript Engine.

What type of language is JavaScript?

JavaScript is an object-based programming language for use as a client-side language with add-on HTML pages for adding some behaviour to it.

What are some products that use JavaScript?

ASP, jaggery.js, MongoDB and Node.js are a few products using server-side JavaScript.

What are a few interesting things that JavaScript can do on a browser?

JavaScript can manipulate the HTML elements and also react quickly to user actions. Besides these, it can help send requests to a remote server.

What are the main benefits of JavaScript?

JavaScript is fully integrated with both HTML and CSS. Moreover, all main browsers support JavaScript by default.

How is ECMAScript related to JavaScript?

JavaScript uses ECMAScript as a scripting language. It is, in fact, a sort of implementation of the ECMAScript. The latter is the standardised JavaScript version.

What data types do JavaScript support?

JavaScript supports data types such as Undefined, Boolean, Null, String, Object, Number and Symbol.

What is the strict mode?

Strict mode applies to an entire script or to individual functions. It never applies to block statements or to close, enclosed by curly braces.

What is a String in JavaScript?

A group of characters or data is a string in JavaScript. No separate character type or single character stays stored in the form of a string.

What is Self-Executing Function?

Such a function will execute after it is defined. It executes code without actually declaring the global. Such a self-executing function type has no name and is an anonymous function.

DOM is a World wide web consortium-related standard created on an HTML page loading in a browser. This defines an HTML element as an object and also allows scripts to manipulate content dynamically along with the document structure.

Browser Object Model or BOM provides interactions with a browser. A window is the default object for a browser. The properties that windows provide are a document, the history, the screen, the location, and the navigator.

What is the NaN property in the context of JavaScript?

Such a property depicts a “Not-a-Number” linked value. The value it shows isn’t a legal number. A type of NaN might return a Number. When you need to check if the value is NaN, use the isNaN() function.

What is the use of history objects?

The history object of a browser can help switch to history pages.

What is the role of timers in the context of JavaScript?

Timers help operates any piece of code at specific times. These also help to iterate code in a specific interval.

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