【公众号h5开发】函数：执行关闭浏览器窗口，返回公众号首页

<script>
            pushHistory();
            //监听触发物理返回按钮
            window.addEventListener("popstate", function(e) { 
                f_close();//执行关闭浏览器窗口，返回公众号首页
                return;
            }, false); 
            function pushHistory() { 
                var state = { 
                title: "title", 
                url: "#"
                }; 
                window.history.pushState(state, "title", "#"); 
            }
            function f_close(){
                if(typeof(WeixinJSBridge)!="undefined"){
                    WeixinJSBridge.call('closeWindow');
                }else{
                    if (navigator.userAgent.indexOf("MSIE") > 0) {  
                    if (navigator.userAgent.indexOf("MSIE 6.0") > 0) {  
                        window.opener = null; window.close();  
                    } else {  
                        window.open('', '_top'); window.top.close();  
                    }  
                    } else if (navigator.userAgent.indexOf("Firefox") > 0) {  
                    window.location.href = 'about:blank ';  
                    } else {  
                        window.opener = null;   
                        window.open('', '_self', '');  
                        window.close();  
                    }
                }
            }
    </script>