JavaScript console Methods Quick Guide

Publié le: 25 avril 2025
sur la chaîne: Friend of Tech

So, while implementing logging in Next.js, I stumbled upon the console rabbit hole. I used to use console.log and error quite regularly, but wasn’t aware of other methods natively provided by JavaScript. Let’s dive into it.

console.error → Shows an error message (shown in red)

console .warn → Shows a warning message (shown in yellow)

console.info → Shows an informative message, such as what port we are working on.

console.log → Used for general logging that is temporary.

console.debug → Shows a message to the console with the log level debug, i.e. more detailed information that is relevant only to the developer to investigate an issue and is hidden otherwise.

console.table → Shows data of an array/object as a table. Eg: console.table([“apples”, “oranges”, “bananas”]);

console.time → Allows you to set a timer to see how long a task takes to be completed.

Be sure to use a git pre-commit hook or plugin to check methods or keywords, such as consoles, that you don’t want to appear before the production release.

#frontend #webdevelopment

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