使用h5新特性监听App自带返回键

1. pushHistory(); 
   window.addEventListener("popstate", function(e) { 
       alert("我监听到了浏览器的返回按钮事件啦");//根据自己的需求实现自己的功能 
   }, false); 
   function pushHistory() { 
       var state = { 
           title: "title", 
           url: "#"
       }; 
       window.history.pushState(state, "title", "#"); 
   }

   
   

2. var hiddenProperty = 'hidden' in document ? 'hidden' :    
       'webkitHidden' in document ? 'webkitHidden' :    
       'mozHidden' in document ? 'mozHidden' :    
       null;
   var visibilityChangeEvent = hiddenProperty.replace(/hidden/i, 'visibilitychange');
   var onVisibilityChange = function(){
       if (!document[hiddenProperty]) {    
           console.log('页面非激活');
       }else{
           console.log('页面激活')
       }
   }
   document.addEventListener(visibilityChangeEvent, onVisibilityChange);

   
   https://developer.mozilla.org/zh-CN/docs/Web/API/Document/hidden