change property name

Question

I have a JavaScript object as follows:

var a = { Prop1: 'test', Prop2: 'test2' }

How would I change the "property name" of Prop1 to Prop3?

I tried

for (var p in r) p.propertyName = 'Prop3';

but that did not work.

Answer 1

That isn't directly possible.

You can just write

a.Prop3 = a.Prop1;
delete a.Prop1;

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