Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript

Posted by Lukas Korol
Lukas Korol
2,649 Points

What does mean $ before value of attribute in JQuery?

Hi. I don't know what $ mean in this example. Why we add this before "<img>".

var $image = $("<img>");

2 Answers

Shunpan Lo
.a{fill-rule:evenodd;}techdegree
Shunpan Lo
Full Stack JavaScript Techdegree Student 19,126 Points

Then $image will be a jquery object. It allows you to manipulate it using jquery method.

Daniel Santos
Daniel Santos
34,969 Points
Daniel Santos
Daniel Santos
34,969 Points

When you use $ to name a variable, it is a jQuery convention. But when you use it in from of the selector, for example $("#something"), it is the same as, jQuery.("#something"), it is a lot of less typing.