Add Styles to Console Statements
I was recently checking out Google Plus because they implement some awesome effects. I opened the console and same the following message:
WARNING!
Using this console may allow attackers to impersonate you and steal your information using an attack called Self-XSS.
Do not enter or paste code that you do not understand.
I wasn't surprised to see that message but what I did notice was that the text was red and the background was yellow. The text was even a bit bigger. How did they do it? Pretty easily:
console.log("%c%s",
"color: red; background: yellow; font-size: 24px;",
"WARNING!");
The first argument is the order of style and message, the second is the style set, and the last is the desired message.
As to why you'd want to use this? If it helps you identify debug information easier in the console, you may consider calling more attention to some messages!
![5 HTML5 APIs You Didn’t Know Existed]()
When you say or read "HTML5", you half expect exotic dancers and unicorns to walk into the room to the tune of "I'm Sexy and I Know It." Can you blame us though? We watched the fundamental APIs stagnate for so long that a basic feature...
![5 More HTML5 APIs You Didn’t Know Existed]()
The HTML5 revolution has provided us some awesome JavaScript and HTML APIs. Some are APIs we knew we've needed for years, others are cutting edge mobile and desktop helpers. Regardless of API strength or purpose, anything to help us better do our job is a...
![Create a Simple News Scroller Using Dojo]()
My journey into Dojo JavaScript has been exciting and I'm continuing to learn more as I port MooTools scripts to Dojo. My latest experiment is porting a simple new scroller from MooTools to Dojo. The code is very similar!
The HTML
The news items...
![MooTools TextOverlap Plugin]()
Developers everywhere seem to be looking for different ways to make use of JavaScript libraries. Some creations are extremely practical, others aren't. This one may be more on the "aren't" side but used correctly, my TextOverlap plugin could add another interesting design element...
Easy, if one controls the browser and therefor the console, that has to display this ;) But Firefox supports this as well, and only IE prints both, the format string as the string itself 1:1 into F12.
There’s a JS library that makes styling comments much easier:
https://github.com/astoilkov/console.message
By replacing your formatting placeholders with
%c%o
, it will output a readable repr for any type of object you pass in, not just the str value.https://jsfiddle.net/jsatt/Lta6p2jz/2/
very cool advice! my console is very colour ;)
With some trickery you can inject images too!
I find it amusing that this post starts with an example of a warning not to copy & paste code into the console, and ends with me wanting to copy & paste code from people’s comments into the console.
But it’s okay, cause I sort of understand it, right?
I like to put an object at the top of my script when I am developing to create a shortcut for styling my logs: