JavaScript The entries() method


Example

The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array.

6
var letters = ['a','b','c'];

for(const[index,element] of letters.entries()){
  console.log(index,element);
}

result

0 "a"
1 "b"
2 "c"

Note: This method is not supported in Internet Explorer.

Portions of this content from Array.prototype.entries by Mozilla Contributors licensed under CC-by-SA 2.5