js後退一直停留在當前頁面或者禁止後退

//禁用後退按鈕
function stopHistoryGo() {
	//禁用回退
	window.location.hash="no-back-button";
	window.location.hash="Again-No-back-button";//again because google chrome don't insert first hash into history
	window.location.hash="Again-No-back-button";
	window.onhashchange=function(){window.location.hash="no-back-button";}
	window.setTimeout(function(){window.location.hash="Again-No-back-button";},1000);
}