var arr=[1,4,6,4,2]; for(var i=0; i<3; i++){ arr[i]=arr[i]+arr[i+2]; } document.write(arr[3]);

Question

What is the output of this code?

var arr=[1,4,6,4,2];
for(var i=0; i<3; i++){
arr[i]=arr[i]+arr[i+2];
}
document.write(arr[0]);
https://code.sololearn.com/WggijYpSg59h/?ref=app

Answer 1

4

Answer 2

What is your question?
Run the code to see the output.

Answer 3

Lisa Can someone explain to me how to get 4 in the output....?🙄

Answer 4

/*
Print each step out and compare with the result:
*/

let arr=[1,4,6,4,2];
for(let i=0; i<3; i++){
console.log(`${i}: ${arr[i]}+${arr[i+2]}`); // print each iteration
arr[i]=arr[i]+arr[i+2];
}
console.log(arr); // print result