Tag: setTimeout

var test = function () {
  if (condition) {
    console.log('ok')
  }
  else {
    setTimeout(test, 1000);
  }
}
test();

Request do serwera co 1 minutę:

var timer = window.setInterval(function () {

  var time = (new Date).getTime();
  var ajax = jQuery.ajax({
    url: '?a=touch',
    cache: false,
    type: 'get',
    dataType: "json",
    data: {
      time: time
    },
    success: function (data) {
    }
  })
}, 60000);