JavaScript

June 5, 2023

How to use JavaScript Array entries()

Program to use JavaScript Array entries() method

let a = [ 'Cat', 'Dog', 'Tiger', 'Lion', 'Elephant' ];
let b = a.entries();
for(let c of b){
   console.log(c);
}

Output

[ 0, 'Cat' ]
[ 1, 'Dog' ]
[ 2, 'Tiger' ]
[ 3, 'Lion' ]
[ 4, 'Elephant' ]

Steps Description

1. Declare three variables a, b and c
2. Initialize three variables with array value respectively a = [ 'Cat', 'Dog', 'Tiger', 'Lion', 'Elephant' ], b = a.entries() and c
3. Array entries() method returns the index number of the array.
4. The value of c variable is displayed with the help of console.log inbuilt function

Program to use JavaScript Array entries() method

let d = [3,5,7,2,8];
let e = d.entries();
for(let f of e){
   console.log(f);
}

Output

[ 0, 3 ]
[ 1, 5 ]
[ 2, 7 ]
[ 3, 2 ]
[ 4, 8 ]

Steps Description

1. Declare three variables d, e and f
2. Initialize three variables with array value respectively d = [3,5,7,2,8], e = d.entries() and f
3. Array entries() method returns the index number of the array.
4. The value of f variable is displayed with the help of console.log inbuilt function

by : Suhel Akhtar