view_trigger.js

// A JS file that uses Firebase, moment.js, l1.io and js_cookie to track time of access and IP address 
// Dependencies include
//  - https://cdn.rawgit.com/moment/moment/develop/min/moment.min.js
//  - https://www.gstatic.com/firebasejs/4.1.3/firebase.js
//  - https://l2.io/ip.js?var=userip

// Insert Firebase configuration data here!
firebase.initializeApp(config);

database = firebase.database();

window.onload = function(){
    var databaseRef1 = database.ref('/totalcount/viewcount/');
    databaseRef1.once('value', function(snapshot){
        var viewnumber = snapshot.val();
        if(viewnumber == null){
            viewnumber = 1 
        } else {
            viewnumber++;
        }
        var databaseRef2 = database.ref('/totalcount/'); 
        databaseRef2.set({
            viewcount: viewnumber
        })
    });

    var databaseRef3 = database.ref('/datetime/').push();
    var timenow = moment().format('MMMM Do YYYY, h:mm:ss a');
    databaseRef3.set({
        datetime: timenow,
        ipaddress: userip
    });
}