js fallback control page refreshes data

    // determines whether the page needs to be refreshed 
    <Script> 
        window.addEventListener ( 'pageshow', function (Event) { 
            // pageshow page load references: cache is true, onload is to false 
            // if loading from the cache, then the direct refresh 
            if ( event.persisted) // ios effective, android and pc every time false 
            { 
                location.reload (); 
            } 
            the else except // ios 
            { 
                // need to refresh the page in the coming years is set to return to true 
                IF (sessionStorage. the getItem ( 'Refresh') === 'to true') 
　　　　　　　　　　{ 
                    location.reload (); 
                } 
            } 
　　　　　　sessionStorage.removeItem ( 'Refresh'); // be sure to clear, or else the wine has a cycle  
        });
    </script>

　　

// 设置session    sessionStorage.setItem("refresh", "true");