Dynamic keys in Javascript associative array declaration one-liner
javascript
Solution
It is now possible to use dynamic keys in the declaration of a javascript object, in any browser/platform that supports ES6 literal shorthands:
key = "dynamic";
arr2 = {
[key]: "foo", // "dynamic": "foo"
"bar": "baz"
};
Problem
I would expect the following three associative arrays to be identical: ``` arr1 = { "dynamic":"foo", "bar":"baz" }; key = "dynamic"; arr2 = { key:"foo", "bar":"baz" }; arr3 = {}; arr3[key] = "foo"; arr3["bar"] = "baz"; ``` In the above examples, `arr1` and `arr3` are the same, but `arr2` is different. Is it possible to use dynamic keys in the declaration of a javascript associative array?