It's for sending data to the console to be viewed by a developer, or potentially an end user for remote diagnostic purposes. It's used specifically for logging (as the method name suggests), and debugging. If you know other languages, console.log is essentially JS's version of print/println. If you've never seen the browser console before, open your browser, hit F12 to open the developer tools, then press the "console" tab. You can run arbitrary JS in that window, and logs will show up there. I’m confused about it since we can use Var or let for stating variables . console.log has nothing to do with var or let or variables; beyond that it allows printing the contents of variables. Answer from carcigenicate on reddit.com
Jsconsole
jsconsole.com
jsconsole
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MDN Web Docs
developer.mozilla.org › en-US › docs › Web › API › console
console - Web APIs | MDN
Pass in a variable number of arguments whose string representations get concatenated into one string, then output to the console. Pass in a string containing zero or more substitution strings followed by a variable number of arguments to replace them. The simplest way to use the logging methods is to output a single object: js ·
JavaScript newbie - what is console.log() actually for??
It's for sending data to the console to be viewed by a developer, or potentially an end user for remote diagnostic purposes. It's used specifically for logging (as the method name suggests), and debugging. If you know other languages, console.log is essentially JS's version of print/println. If you've never seen the browser console before, open your browser, hit F12 to open the developer tools, then press the "console" tab. You can run arbitrary JS in that window, and logs will show up there. I’m confused about it since we can use Var or let for stating variables . console.log has nothing to do with var or let or variables; beyond that it allows printing the contents of variables. More on reddit.com
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September 28, 2021I Built a JavaScript Console
This is pretty slick. I usually just use node in command line or even the browser console if I need to execute something in js (typically for doublechecking truthiness cus it’s wild out there) but I like this for the slick intellisense. Would be dope if you could build this as a vscode extension More on reddit.com
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January 25, 2024jquery - Console.log messages not showing up in Chrome's javascript console? - Stack Overflow
What fixed this for me was disabling firebug lite in chrome. It was swallowing all console messages. ... What a pain... forgot I had it installed and hidden on the page... >.< 2011-09-02T14:00:18.8Z+00:00 ... There's a modified version of firebugx.js over at stackoverflow.com/a/4984463/32127 ... More on stackoverflow.com
Difference between console.log() and console.debug()?
Google has not been helpful for me, since searching for "console.debug" just brings up a bunch of pages that have the words "console" and "debug" on them. I'm wondering what the difference is bet... More on stackoverflow.com
Videos
15:14
How to use the JavaScript Console - YouTube
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The JavaScript Console Explained for Absolute Beginners - YouTube
Chapter 4: Javascript Tutorial - How to use the Console? and what ...
22:08
Advanced JavaScript console methods you should know - YouTube
08:23
JavaScript Console Tricks You Need to Try - YouTube
Chrome Developers
developer.chrome.com › docs › chrome devtools › console overview
Console overview | Chrome DevTools | Chrome for Developers
September 21, 2024 - The Console has 2 main uses: viewing logged messages and running JavaScript.
Reddit
reddit.com › r/learnprogramming › javascript newbie - what is console.log() actually for??
r/learnprogramming on Reddit: JavaScript newbie - what is console.log() actually for??
September 28, 2021 -
Sorry this may be a dumb question- but I’m learning JavaScript. When do you ACTUALLY need console.log() ? I’m confused about it since we can use Var or let for stating variables . What’s the actual importance of console.log()
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It's for sending data to the console to be viewed by a developer, or potentially an end user for remote diagnostic purposes. It's used specifically for logging (as the method name suggests), and debugging. If you know other languages, console.log is essentially JS's version of print/println. If you've never seen the browser console before, open your browser, hit F12 to open the developer tools, then press the "console" tab. You can run arbitrary JS in that window, and logs will show up there. I’m confused about it since we can use Var or let for stating variables . console.log has nothing to do with var or let or variables; beyond that it allows printing the contents of variables.
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console.log is just telling the browser, “Print this in the console so I can see it”. It’s helpful for debugging, and showing any information that you want to see. It’s a feature that exists to help programmers and sometimes users, but it doesn’t store data like a variable does. Are you asking this because you’re writing code in the console itself? If that’s the case, the console does print out a lot of things automatically, but when your code is running in the browser, those printed things don’t show up, which is what console.log is for.
Node.js
nodejs.org › api › console.html
Console | Node.js v26.4.0 Documentation
A Console class with methods such as console.log(), console.error(), and console.warn() that can be used to write to any Node.js stream.
W3Schools
w3schools.com › jsref › met_console_log.asp
W3Schools.com
JS String JS Number JS Boolean JS BigInt JS Symbol JS undefined JS null JS undefined vs null JS Constructors
Coursera
coursera.support › s › article › learner-000001653
How to open the Javascript console
Find your browser below for steps and keyboard shortcuts to open the Javascript console.
Syncfusion
syncfusion.com › blogs › javascript › 11 console methods in javascript for effective debugging
11 Console Methods in JavaScript for Effective Debugging | Syncfusion Blogs
December 10, 2024 - JavaScript console methods allow developers to access the debugging console in web browsers. Developers can improve the application debugging process by using methods to print various messages on the browser console.
Reddit
reddit.com › r/javascript › i built a javascript console
r/javascript on Reddit: I Built a JavaScript Console
January 25, 2024 -
I needed a convenient way to quickly run JavaScript code without having to open VSCode or a terminal. Other alternatives I found were either too bloated with a heavy focus on HTML and CSS, or too basic with unreliable logging. So, I decided to build my own JavaScript console using the same editor that VSCode uses, which provides a lot of handy features right out of the box.
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This is pretty slick. I usually just use node in command line or even the browser console if I need to execute something in js (typically for doublechecking truthiness cus it’s wild out there) but I like this for the slick intellisense. Would be dope if you could build this as a vscode extension
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Can't you just open the console in browser?
Microsoft Learn
learn.microsoft.com › en-us › microsoft-edge › devtools › console › console-javascript
Run JavaScript in the Console - Microsoft Edge Developer documentation | Microsoft Learn
In DevTools, open the Console. Copy and paste the following code snippet to get an object that contains 10 entries: await ( await fetch( 'https://api.github.com/repos/microsoft/vscode-edge-devtools/issues?state=all&per_page=50&page=1' )).json(); The 10 entries are hard to recognize, since a lot of information is displayed.
GeeksforGeeks
geeksforgeeks.org › javascript › console-in-javascript
Console in JavaScript - GeeksforGeeks
May 5, 2026 - The console object provides access to the browser's debugging console (or terminal in Node.js).
Chrome Developers
developer.chrome.com › docs › chrome devtools › run javascript in the console
Run JavaScript in the Console | Chrome DevTools | Chrome for Developers
April 18, 2018 - Press Command+Option+J (Mac) or Control+Shift+J (Windows, Linux, ChromeOS) to open the Console, right here on this very page.
Google Play
play.google.com › store › apps › details
Javascript Console Editor - Apps on Google Play
April 20, 2026 - Javascript Console Editor is a 100% offline supported application, used to run any javascript code like a browser console panel from the inspect menu. Javascript Console also can be called a js console, in the application we have designed the ...
JSFiddle
jsfiddle.net
JSFiddle - Code Playground
Debug your Fiddle with a minimal built-in JavaScript console. JSFiddle is used by you and 4+ million other developers, in many companies ...
JS Bin
jsbin.com
JS Bin
A live pastebin for HTML, CSS & JavaScript and a range of processors, including SCSS, CoffeeScript, Jade and more...
MDN Web Docs
developer.mozilla.org › en-US › docs › Web › API › Console_API
Console API - Web APIs | MDN
October 25, 2024 - console · Provides rudimentary debugging functionality, including logging, stack traces, timers, and counters. js · let myString = "Hello world"; // Output "Hello world" to the console console.log(myString); See the console reference page for more examples.
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Make sure you have the console showing and that it is showing "All".
The cursor is on the button to hide/show the console.
Update: In newer versions of Chrome, you need to click the filter icon, then make sure "All" is selected.
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I've just had the same problem and found this question when trying to find an answer.
What fixed this for me was disabling firebug lite in chrome. It was swallowing all console messages.
freeCodeCamp
freecodecamp.org › news › javascript-console-log-example-how-to-print-to-the-console-in-js
JavaScript Console.log() Example – How to Print to the Console in JS
November 12, 2024 - Logging messages to the console is a very basic way to diagnose and troubleshoot minor issues in your code. But, did you know that there is more to console than just log? In this article, I'll show you how to print to the console in JS, as well as al...
DEV Community
dev.to › accreditly › javascript-console-methods-a-comprehensive-guide-icj
JavaScript `console` Methods: A Comprehensive Guide - DEV Community
March 18, 2023 - function firstFunction() { secondFunction(); } function secondFunction() { console.trace(); } firstFunction(); Expected output: Trace at secondFunction (script.js:6) at firstFunction (script.js:3) at script.js:9 · To display large, formatted text in the console, you can use the %c format specifier in console.log() along with CSS styling.
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Technically console.log console.debug and console.info are identical
However the way they display the data is little different. console.debug is not visible by default in the browser's JS console. It can be enabled by using the console's filter options.
console.log Black color text with no icon
console.info Blue color text with icon
console.debug Pure black color text
console.warn Yellow color text with icon
console.error Red Color text with icon
Copyvar playerOne = 120;
var playerTwo = 130;
var playerThree = 140;
var playerFour = 150;
var playerFive = 160;
console.log("Console.log" + " " + playerOne);
console.debug("Console.debug" + " " +playerTwo);
console.warn("Console.warn" + " " + playerThree);
console.info("Console.info" + " " + playerFour);
console.error("Console.error" + " " + playerFive);
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For at least IE, Firefox and Chrome consoles, .debug() is just an alias for .log() added for improved compatibility
https://developer.mozilla.org/en-US/docs/Web/API/console
https://developers.google.com/chrome-developer-tools/docs/console-api#consoledebugobject_object
https://msdn.microsoft.com/en-us/library/ie/hh772183(v=vs.85).aspx