How to change CSS using jQuery?

Ignore the people that are suggesting that the property name is the issue. The jQuery API documentation explicitly states that either notation is acceptable: http://api.jquery.com/css/ The actual problem is that you are missing a closing curly brace on this line: Change it to this: Here’s a working demo: http://jsfiddle.net/YPYz8/

What is console.log?

It’s not a jQuery feature but a feature for debugging purposes. You can for instance log something to the console when something happens. For instance: You’d then see #someButton was clicked in Firebug’s “Console” tab (or another tool’s console — e.g. Chrome’s Web Inspector) when you would click the button. For some reasons, the console … Read more