taphold的なプラグイン

jquery.taphold.js

(function($) {
  $.fn.taphold = function(tapholdCallback, duration) {
    var timerId;
    var toClick = true;
    duration = duration || 720;
    if (typeof window.ontouchstart !== "undefined"
        && typeof tapholdCallback == "function") {
      $(this).css("webkitTouchCallout", "none");
      $(this).on("touchstart", function(e) {
        e.preventDefault();
        timerId = setTimeout(function() {
          setTimeout(function() {
            toClick = false;
            tapholdCallback(e);
          }, 0);
          timerId = null;
        }, duration);
      });
      $(this).on("touchend touchmove touchcancel", function(e) {
        e.preventDefault();
        if (timerId) {
          clearTimeout(timerId);
          toClick = true;
        }
        if (toClick && $(this).onclick !== null) {
          var elm = this;
          setTimeout(function() { $(elm).click(); }, 0);
        }
      });
    }
    return this;
  };
})(jQuery);