制作对象时，不会对数组键进行插值

I'm turning JSON into an array and back into separate JSON objects (it has to do with React and children). The array below works fine, as does putting array elements into vars. But when I try to make an obj from them, the key does not work, it just stays as "myKey" - Why? What is the right way to turn array elements into objects?I'm turning JSON into an array and back into se