ExtJS 6 access messageProperty in store sync's callback
问题 I want to display a message from my server in the UI after synchronizing an ExtJS grid. Here's an excerpt of how that goes: this.store.sync({ callback: function (records, operation, success) { // messageProperty accessing code }, success: function (batch, options) { // messageProperty accessing code }, failure: function (batch, options) { } }); Here's a piece of the store definition: proxy: { headers: { 'Accept': 'application/json' }, limitParam: undefined, pageParam: undefined, startParam: