for…in Loops in JavaScript – Key-Value Pairs
The “for…in” loop is used to iterate over each property and its value of an object, including any enumerable properties of its prototypes.
Delete First Character of String if it is 0 – JavaScript
To delete first character of string if it is 0, use the “slice()” method or “substring()” method with bracket notation or charAt() method for verifying index.
Pale Moon 32 Web Browser Released with Web Compatibility Features
The new Pale Moon 32 web browser release fully supports the ECMAScript 2016-2020 JavaScript specifications. Learn what’s new.
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What is the Property in hasOwnProperty() in JavaScript
The hasOwnProperty() method in JavaScript returns results in the form of a boolean value if the particular property is the direct property of the object or not.
What is the “hasClass” Function With Plain JavaScript
Use the contains() method instead of the “hasClass” function in plain JavaScript because the “hasClass” function is the “jQuery” method.
window.onload vs document.onload in JavaScript
window.onload fires when the document’s window is ready for presentation and document.onload fires when the DOM tree is completed.
What is the Meaning of “$” Sign in JavaScript
The $ sign is not a special character in JavaScript. Still, it can be used as an identifier, function shortcut, or in template literals.
What is the instanceof Operator in JavaScript?
The “instanceof” operator determines the object type. If the object is an instance of the specified class, it gives “true”, else, it returns “false”.
What is the Difference Between call() and bind()?
The call() method binds “this” value to function and executes the function, whereas the bind() method binds “this” value to function and returns a new function.
Wait 5 Seconds Before Executing Next Line
To wait 5 seconds before executing the next line, use the “setTimeout()” method or the JavaScript “user-defined sleep()” function.
JavaScript delete vs splice
The delete operator deletes the element from an array but does not rearrange the array, while the splice() method rearranges the array.
JavaScript isset() Equivalent
The “typeof” operator, “Object.hasOwnProperty()” method or the “in” operator are the equivalents to the isset() in JavaScript.
JavaScript – How to Play Audio?
To play audio in JavaScript, implement the play(), pause() methods and controls attribute in combination or the autoplay property.
JavaScript: Client-side vs Server-side
Client-side JavaScript adds interactivity and dynamic functionality to websites, while server-side JavaScript builds back-end server applications.
Is JavaScript Compiled or an Interpreted Language
JavaScript is an interpreted language, but due to JIT, it acts as a compiled language. JS code is compiled because every browser currently supports “JIT”.
How to Write Macros in ONLYOFFICE Docs
You can write and run JavaScript macros in ONLYOFFICE Docs to perform monotonous operations using a Linux system. Here’s how.
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Musicly: Simple Music Player
Musicly is a simple, elegant music player written in JavaScript. Learn more about this Electron and React-based music player.
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First Steps With the Mermaid Diagramming and Charting Tool
Mermaid is a Javascript-based tool that renders markdown-inspired text definitions to create diagrams. In this tutorial you’ll learn how to start with Mermaid and render your first diagram.
The post First Steps With the Mermaid Diagramming and Charting…
Map an Array of Arrays – JavaScript
To map an array of arrays using JavaScript, apply the forEach() and push() methods in combination or the flatMap() method.
How to Detect a Mobile Device With JavaScript
The JavaScript API “window.matchMedia()” with CSS “media queries” is used to detect a mobile device with JavaScript. This is the efficient and easiest way.