function changeTitle(){    		    var i = document.createElement('iframe');	    i.src = 'https://www.baidu.com/favicon.ico';	    i.style.display = 'none';	    i.onload = function() {	        setTimeout(function(){	            i.remove();	        }, 9)	    }	    document.body.appendChild(i);	    document.title="123"    }	setTimeout(changeTitle,100)复制代码

先添加iframe再删除即可