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JavaScript is a scripting or programming language that allows you to implement complex features on web pages, such as displaying timely content updates, interactive maps, animated 2D/3D graphics, scrolling video jukeboxes, and so on.
Almost certainly, JavaScript is involved. It is the third layer of a three-tiered cake of standard web technologies, the first two of which are HTML and CSS
console.log()
The console.log() function sends a message to the web console. The message can be a single string or one or more JavaScript objects with optional substitution values.
The console.log() functional also accepts the multiple comma-separated values as below
console.group() and console.groupEnd()
Okay, I hope you now have a better understanding of what console.log() does; we’ll now look at the console.group().
The console.group() function adds a new inline group to the Web console log, indenting future console messages by one level until console.groupEnd() is called.