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

In general, if you need to pass a function as a callback with specific parameters, you can use higher order functions. This is pretty elegant with ES6:

const someFunction = (params) => () => {
  //do whatever
};

setTimeout(someFunction(params), 1000);

Or if someFunction is first order:

setTimeout(() => someFunction(params), 1000);