How to add json data in combobox using remote url. I am getting error in below code. fields.add({ xtype:'combo', displayField: 'names', valueField: 'names', store: new Ext.data.Store({ fields: [name:"names", type:"string"], proxy : { api : { read : " Remote Url Here ", }, reader : { type : "json" }, } }), }); can any one have proper code or any idea for above function