Object fields sequence

Question

I have a JavaScript object written in javascript code as below:

var rtnStr = {\"000\":\"area000\",\"020\":\"area020\",\"030\":\"area030\",
              \"040\":         


        

Answer 1

JavaScript objects are unordered.

If you want to output their properties in a sorted order then:

1. Create an array
2. Loop over the object, pushing the property names into the array
3. Sort the array
4. Loop over the array (and use the values to access the original object).