How make SAP UI5 read method synchronous

Hi All,

I am calling three OData read functions on click of a button but here issue is it not executing in a sequential order means sometimes it is calling OData 2 Read and OData 3 Read and then OData 1 Read. Please let me know how can we make javascript to execute my odata calls in sequential way like call OData1, OData2, OData3.

Regards,