Loading local content through XHR in a Chrome packaged app

ajax, google-chrome, google-chrome-app, xmlhttprequest

Solution

Yes, it's totally possible, and it's easy. Here's a working sample. Try starting with this, confirm that it works, and then add back in your own code. If you hit a roadblock and come up with a more specific question than whether XHRs work in packaged apps, you might want to ask a new question.

manifest.json:

{
  "name": "SO 15977151 for EggCup",
  "description": "Demonstrates local XHR",
  "manifest_version" : 2,
  "version" : "0.1",
  "app" : {
    "background" : {
      "scripts" : ["background.js"]
    }
  },
  "permissions" : []
}

background.js:

chrome.app.runtime.onLaunched.addListener(function() {
  chrome.app.window.create("window.html",
    { bounds: { width: 600, height: 400 }});
});

window.html:

<html>
<body>
  <div>The content is "<span id="content"/>"</div>
  <script src="main.js"></script>
</body>
</html>

main.js:

function requestListener() {
  document.querySelector("#content").innerHTML = this.responseText;
};

onload = function() {
  var request = new XMLHttpRequest();
  request.onload = requestListener;
  request.open("GET", "content.txt", true);
  request.send();
};

content.txt:

Hello, world!

Problem

I'm trying to load in a web app that I've built using Backbone and it pulls in JSON and HTML template files that are stored locally. I was wondering with Chrome packaged apps whether it's possible to load these files by using some sort of 'get'/ajax request? Currently I'm getting this... ``` OPTIONS chrome-extension://fibpcbellfjkmapljkjdlpgencmekhco/templates/templates.html Cannot make any requests from null. jquery.min.js:2 XMLHttpRequest cannot load chrome-extension://fibpcbellfjkmapljkjdlpgencmekhco/templates/templates.html. Cannot make any requests from null. ``` I can't find any real information on how to do this so any help would be great thanks!

Original source