How to use JavaScript Array entries()

Array entries() Method

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

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

Array entries() Method

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

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