How to set selected value of jquery select2?

Question

This belong to codes prior to select2 version 4

I have a simple code of select2 that get data from ajax

Answer 1

Sometimes, select2() will be loading firstly, and that makes the control not to show previously selected value correctly. Putting a delay for some seconds can resolve this problem.

setTimeout(function(){                  
    $('#costcentreid').select2();               
},3000);