Question

I am exceuting this AJAX request in a google chrome extension; which logs an error in the chrome console:

Uncaught Error: Invalid value for argument 1. Expected 'object' but got 'string'. - extensions/extension_process_bindings.js:66

chromeHidden.validate - extensions/extension_process_bindings.js:66

(anonymous function) - extensions/extension_process_bindings.js:622

xmlhttp.onreadystatechange - popup.html:362

Although only one of those errors is in my code, I think it’s this section (The line that flags up is marked)

var xmlhttp;
xmlhttp=new XMLHttpRequest();
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    if (xmlhttp.responseText != 0)
      {
      chrome.browserAction.setBadgeText(xmlhttp.responseText); // LINE 362 - FINAL ERROR
      chrome.browserAction.setBadgeBackgroundColor(255,0,0,255);
      document.getElementById("alerts").innerHTML = xmlhttp.responseText;
      }
    }
  }
xmlhttp.open("GET","http://adams-site.x10.mx/checkalerts.php?

day="+dayname,true);
xmlhttp.send();
}

Answer 1

According to a sample from the Chrome extension site (and the API) you need to pass an object (which the error suggests) instead of just passing the text.

From the sample:

chrome.browserAction.setBadgeText({text:String(i)});

So likely you just need:

chrome.browserAction.setBadgeText({text: xmlhttp.responseText });