Simple jQuery snippet for input with XMLHTTPRequest (Ajax)

input_with_ajax.js

$(function () {
  var timer;
  $('#id_input').keyup(function() {
    clearTimeout(timer);
    var val = this.value
    var ms = 1000
    timer = setTimeout(function() {
      getSomething(val)
    }, ms)  
  });
})

function getSomething(param) {
  var url = 'http://mysite.com/getsomething'
  $.get(url, {parameter: param}, function(data) {
    doSomething(data)
  });
}