jQuery 的 .css() 是否自动处理浏览器前缀？

(function($) {
  function styleSupport(prop) {
    var prefixes = ['Moz', 'Webkit', 'O', 'ms'],
        div = document.createElement('div');

    if (prop in div.style) {
      supportedProp = prop;
    } else {
      for (var i = 0; i < prefixes.length; i++) {
        vendorProp = prefixes[i] + capProp;
        if (vendorProp in div.style) {
          supportedProp = vendorProp;
          break;
        }
      }
    }

    div = null;
    $.support[prop] = supportedProp
    return supportedProp
  }

  var myCssPropName = styleSupport("myCssPropName");

  if (myCssPropName &amp;&amp; myCssPropName !== 'myCssPropName') {
    $.cssHooks["myCssPropName"] = {
      get: function(elem, computed, extra) {
        return $.css(elem, myCssPropName);
      },
      set: function(elem, value) {
        elem.style[myCssPropName] = value;
      }
    };
  }
})(jQuery);