Display Progress Status using Ext.MessagesBox in extjs(Extended JavaScript)

You can show progress status using the Ext.MessageBox.
Such message boxes can be used to show processing of data at the backend.
The below code is an example of to display it. You can set the timeout as per the time you wish the user should wait.

Ext.MessageBox.show({
                       msg: 'Processing Data.. Please wait',
                       progressText: 'Loading...',
                       width:350,
                       wait:true,
                       waitConfig: {interval:250},
                       icon:'ext-mb-download'
                      
                });
                setTimeout(function(){
                   Ext.MessageBox.hide();
                }, 2000);