/*Ext.application({    name: ‘MyfirstApplication‘,    launch: function () {        Ext.Msg.alert("Hello", "My first App!");    }});*/Ext.onReady(function () {    //alert("This is my first Extjs app !");    //Ext.Msg.alert("Alert", "This is my first Ext js app !");    Ext.Msg.confirm("Confirm","Do you like Ext JS 5?",                   function(btn){        if (btn == "yes"){            Ext.Msg.alert("Great", "This is my first Ext js app !");        } else {            Ext.Msg.alert("Really", "Too Bad!");        }    });});