setTimeout runs only once then not working

I got JS as below. I want all bootstrap alerts to dissaper after 1 sec. It works just one time but when i add more alerts they stays as they are. What is the cause of that?

$(document).ready(function () {
function flashh(message, category) {
    if (category == "error") {
      var icon = "icon-exclamation-sign";
      category = "danger";
    } else if (category == "success") var icon = "icon-ok-sign";
    else var icon = "icon-info-sign";
    $(
      '<div class="alert alert-' +
        category +
        '"><i class="' +
        icon +
        '"></i>&nbsp;<a class="close" data-dismiss="alert">×</a>' +
        message +
        "</div>"
    ).prependTo("#putFlashMsg");
  }
});

setTimeout:

$(document).ready(function () {
  window.setTimeout(function () {
    $(".alert")
      .fadeTo(1000, 0)
      .slideUp(1000, function () {
        $(this).remove();
      });
  }, 5000);
});

Answer

That’s because setTimeout is only called once. If you want to have multiple calls, use setInterval, that is used exactly the same way but is called until clearInterval stops it.