Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript Treehouse Club: JavaScript Car Sounds What's JavaScript?

Aaron Noble
Aaron Noble
6,559 Points

What sign acts as the closing tag in JavaScript, like a period at the end of a sentence?

I thought it was the '>' which was being used to close the </script> tag for Javascript. Could someone please explain the closing tag for Javascript? Thank you, Aaron!

stjarnan
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
stjarnan
Front End Web Development Techdegree Graduate 56,488 Points

Hi Aaron Noble,

You tell JavaScript that you're done by using a ; sign, for example like this:

console.log('See the sign at the end of this line?');

You will soon start using separate files for JavaScript, and it will make more sense to you by then :)

Good luck!

ale8k
ale8k
8,299 Points

In JavaScript, each line of code is called a statement. Not we don't actually have to use ';' to declare a statement end in most cases but we do to stop unwanted bugs occurring in our code by accident. I will show you an example of a few cases where the ';' is used:

let myVar = 0; // Variable declaration and initialisation 
let myVar; // Variable declarion
object.method(); // function calling
object.property; // property calling

/*
For example, we assign the length of a string literal (also an object) to a new variable and because all this is being
done in a single statement, we end it with a ';' otherwise it looks inconsistent and messy 
*/
let myNameLength = 'Alex'.length; // See how it looks much neater with a ';' and let\'s us know the statement ends there. 
// the result also is 4 stored in myNameLength :) which again, we can call.
myNameLength; // you wouldn't see anything but that inside of a console will display 4 :)

I hope this helps understanding syntax of JavaScript a little more. Some of the terms I have used may be unfamiliar to you but I recommend you visit MDN https://developer.mozilla.org/en-US/ and check out some of the things I've mentioned. Don't worry about anything, it is all just rules and regulations really of the language designers. HTML which uses </> is just another set of rules set for HTML. Good luck learning Aaron!

1 Answer

Aaron Noble
Aaron Noble
6,559 Points

Thank you both for the helpful answers and resources! I'm looking at https://developer.mozilla.org/en-US/ right now and learning more and more! Thank you again

ale8k
ale8k
8,299 Points

No problem :) it should be your go-to resource, I advise against W3C schools as a lot of the info on their is actually wrong lol.