js后退一直停留在当前页面或者禁止后退

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//禁用后退按钮 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); }