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 Build a Simple Dynamic Site with Node.js Handling Routes in Node.js User Route

Clarity on single and double quotation marks in Node.js?


I would just like to find out why sometimes in the videos a single quotation is used and sometimes a double, like in the code written below:

var Profile = require("./profile.js");

//Handle HTTP route GET / and POST / i.e Home
function home(request, response) {
    //if url === "/" && GET
    if(request.url === "/") {
        //show search
    response.writeHead(200, {'Content-Type': 'text/plain'});
    //if url == "/" && POST
        //redirect to /:username

Like the 4 response lines towards the bottom, the first type one has single ' ', then the next 2 have a double " " and the last a single ' '. Is there a specific reason for this or do they need to be like this for the code to work correctly?

//Fixed Code Presentation

How to post code

3 Answers

The short answer is that it doesn't really matter, as long as you escape quotes within a quoted string using the same type (escape single quotes in a single quoted string, etc).

Note that JSON requires double quoted strings for everything though.

Chyno Deluxe, thank you for the link on how to include code correctly, didn't know how to do that!

Iain, thank you for the clarity, appreciate the help.

Dan Lauby
Dan Lauby
7,897 Points

Also, in the beginning of the video Andrew copy and pasted example code for creating the server from the Node docs site (single quotes). Then he altered the example code and he used double quotes.