Message: Expected identifier, string or number

If you get this error in your Ext JS page , then there is big possibility that you have added a extra comma which is not required .

E.g.

Incorrect entry

{

title: 'Main Content',

collapsible: false,

region: 'center',

layout: 'fit',

margins: '5 0 0 0',

xtype: 'panelbais' , }

Correct entry

{

title: 'Main Content',

collapsible: false,

region: 'center',

layout: 'fit',

margins: '5 0 0 0',

xtype: 'panelbais' }

Check out the last comma before the closing curly braces .