How can I pass a parameter to a setTimeout() callback?

Question

I have some JavaScript code that looks like:

function statechangedPostQuestion()
{
  //alert("statechangedPostQuestion");
  if (xmlhttp.readyState==         


        

Answer 1

Hobblin already commented this on the question, but it should be an answer really!

Using Function.prototype.bind() is the cleanest and most flexible way to do this (with the added bonus of being able to set the this context):

setTimeout(postinsql.bind(null, topicId), 4000);

For more information see these MDN links:
https://developer.mozilla.org/en/docs/DOM/window.setTimeout#highlighter_547041 https://developer.mozilla.org/en/docs/JavaScript/Reference/Global_Objects/Function/bind#With_setTimeout