如果键不是字符串但给定字符串键以查找值，如何获取 object 值

Question

How to get value of Object if its key is not string but you are given a string to find value

Example: let obj={ arr: ["Kapil"]};
         

         find value of obj.arr is you are given 'arr' as a key

I know this seems stupid to use obj.'arr' but it gave me undefined.

Is there anyway to solve this problem

Any help will be highly commended

Answer 1

You can use square bracket to access it obj['arr']

Answer 2

Lodash if you don't mind.

 const obj = { arr: ["Kapil"] }; console.log(_.get(obj, "arr"));

 .as-console-wrapper { max-height: 100%;important: top: 0 }

 <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>