Question

Chrome removes the function that I’m trying to pass through sendRequest.

function sendQuery() {
  var currentQuery = document.getElementById("queries").value;

  var request = {
    option: "random value",
    command: function() {
      alert("fire!");
    }
  };       

  chrome.tabs.getSelected(null, function(tab) {
    chrome.tabs.sendRequest(tab.id, request)
  });
}

As you can see, request contains function command, but when I ‘dump’ the request that was received by contentscript, everything I get is this:

request
  Object
    option: "random value"
    __proto__: Object

I need to pass the command as well, not just the option. Thanks in advance for helping me to do so.

Edit: Edited according to Pointy’s suggestion, but the problem remains.

Answer 1

The second parameter of chrome.tabs.sendRequest is JSON serialized for transportation.

The one and only way to pass a function is via the third parameter. This function is received as a third parameter at the chrome.extension.onRequest event listener:

function sendQuery() {
    var currentQuery = document.getElementById("queries").value;

    var request = { option: "random value" };
    var command = function() {  alert("fire!");  };       

    chrome.tabs.getSelected(null, function(tab) {
       chrome.tabs.sendRequest(tab.id, request, commans);
    });
}