YUI 之getLocation

關於Y.getLocation的簡介是

Returns the `location` object from the window/frame in which this YUI instance operates, or `undefined` when executing in a non-browser environment

意思就是從window/frame中的YUI實例運行時，或者沒有瀏覽器環境下，返回一個Location對象，緣由是低版本的chrome和safafi會有一個Bug存在

[WebKit Bug 34679](https://bugs.webkit.org/show_bug.cgi?id=34679)

當你在一個

location(function(window){

  // A convenient shortcut.
  var win_loc = window.location,
    loc = location,
    state;

  (function loopy(){
    console.log([
      'win_loc.href: ' + typeof win_loc.href,
      'loc.href: ' + typeof loc.href,
      'location.href: ' + typeof location.href,
      'window.location.href: ' + typeof window.location.href
    ].join(', '));
    timeout_id = setTimeout( loopy, 1000 );
  })();

})(this);

當咱們再隨意點擊一個連接後，經過後退再次返回這個函數所存在的頁面時，在safari（5.1.7）中，前兩個變成了undefined，

測試地址http://benalman.com/code/projects/jquery-hashchange/examples/bug-safari-back-from-diff-domain/

 

YUI的解決方案

locationY.getLocation = function(){
  var win = Y.config.win;
  return win & win.location;
}