Array.prototype.entries()
The entries() method returns a new Array
Iterator object that contains the key/value pairs for each index in the
array.
Syntax
entries()
Return value
A new Array iterator object.
Examples
Iterating with index and element
const a = ['a', 'b', 'c'];
for (const [index, element] of a.entries())
console.log(index, element);
// 0 'a'
// 1 'b'
// 2 'c'
Using a for...of loop
var a = ['a', 'b', 'c'];
var iterator = a.entries();
for (let e of iterator) {
console.log(e);
}
// [0, 'a']
// [1, 'b']
// [2, 'c']
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-array.prototype.entries |
Browser compatibility
BCD tables only load in the browser