Object Array length returns undefined in JavaScript -

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i have array displayed below in console.

console.log(roles);  user {0: "adminuser", 1: "authenticateduser"}

although array unable array length.

console.log(roles.length);  undefined

but if access array using index, able value shown below.

console.log(roles[0]);  adminuser

it not array, object.

the reason why can access using array-like notation js supports square brackets access notation. since have numbers keys, can bit misleading.


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