CODEWITHSUNDEEP
javascriptarrays
Ankit Modi
Ankit Modi

Reputation: 11

JavaScript negative element in array

This is my JavaScript array code for negative index number. In output why doesn't consider negative index number in the count of the element? It shows only count (3) in output.

Code

let abc = ['gnagar', 'ahmedabad', 25];
console.log(abc, typeof(abc));
console.log(abc[-1]);
abc[-1] = 'abc';
console.log(abc, typeof(abc));
console.log(abc[-1]);

Upvotes: 0

Views: 191

Answers (2)

Saurabh Agrawal
Saurabh Agrawal

Reputation: 7739

This is because array is type of object as you can see there typeof(abc) is object.

You can assign values in objects using [].

Negative indexes are not actual index so it does not impact the array length.

Upvotes: 0

keshin
keshin

Reputation: 534

-1 is not a valid index for array.

The assignment abc[-1] = 'abc'; means set attribute "-1" to the abc object.

Upvotes: 1

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