All instances of a given string can be replaced by using the replaceAll() method. This method newly added to Javascript is now supported in all modern browsers.

Bullet color for HTML lists can be changed using the ::marker CSS selector. This selector selects the marker box (bullet or number) for list items.

First contentful paint (FCP) marks the time when browser renders some content for the given document. FCP can be captured in native JavaScript using PerformanceObserver & Paint Timing API.

This article describes how usefulangle.com improved the LCP web vital metric when there was a hero image in the page.

A possible way of detecting adblockers is to listen to the onerror event of the ad serving script element. If the script fails to load, probably it has been blocked by an adblocker.

Input fields inside a form can be retrieved as a query string using FormData & URLSearchParams objects.

Multiple Javascript files can be loaded dynamically and executed in a given order by creating script element for each of them, and inserting them to the DOM in order of their intended execution.

Properties and methods be changed for a const object. It just means that the variable identifier cannot be reassigned.

Events can be removed in Javascript using the removeEventListener() method. However few other things need to be done in order to remove the event successfully

Events can be added to multiple elements that are selected by class by looping through the list of elements and registering event for each element individually.

This tutorial explains how to create a Google Chrome extension that will navigate through a list of given URLs, and save data from each page to a file.

One-time executing events can be created by setting the once option as parameter to addEventListener() method.

To ensure only a single new tab or window is created for several links in the page, the same child attribute needs to set for all the links.

A comment box with an arrow and containing an inner text can be created in CSS by using the clip-path property.

This tutorial explains how to measure site analytics (page views & bounce rate) using custom Javascript, rather than using third party analytics libraries.

This tutorial explains how to measure site analytics (sessions) using Javascript, rather than using third party analytics libraries.

A triangle can created in CSS using the clip-path property. This property can give a triangular shape to any element.

AWS DynamoDB supports 10 data types for attribute values in a table - number, string, boolean, binary, null, list, map, number set, string set & binary set.

The logical nullish assignment operator (??=) works like the assignment operator (=) but assigns only when the left-hand side is a nullish value.

The logical AND assignment operator represented by &&= works like the assignment operator (=), but assigns only when the left-hand side is a truthy value.