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Ajax - Do we need a local server for this Project: astronauts in space?

I'm not sure if I understood correctly: I understood that we need an Local server to use AJAX (XMLHttpRequest()) and with the project: Employee-Office-Status I could tested it and it just worked with a localhost. Now, with this project I tested without a localhost and it works! at least that is what I think. For example: I can see the result of this function without using Local server:

function getJSON(url) {
  const xhr = new XMLHttpRequest();
  xhr.open('GET', url);
  xhr.onload = () => {
    if(xhr.status === 200) {
      let data = JSON.parse(xhr.responseText);

Now I am very confusing! Do we need always Local Server if we use AJAX (XMLHttpRequest()?? ðŸĪŠðŸ™ƒðŸ™†â€â™€ïļ

Please Help!

1 Answer

Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,252 Points

A local server is just a web server that exists on your computer. It's just a slimmed down version of the web hosting servers that you pay for online. So it (i.e. XMLHttpRequest()) should work in either location. :-)