为什么此数组无法映射并找到？

Question

Im debugging a React app, and I have this element here:

If I try to make a user.matches[1] the console returns me the element who is in this position.

But If I try to make a map or a find in this array, the console says "undefined".

What Im missing here??? I want to make a for on this object. Why I cant?

Answer 1

As said by @CertianPerformance that is not an array. that is an object. {} not []. What you need to do is count the keys.

This can be found here How to list the properties of a JavaScript object?

var keys = Object.keys(myObject);

then keys would be an array :)

edit: said object instead of array