Question

How to loop through an array in JavaScript

Answer 1

const arr = [1, 2, 3, 4, 5, 6, 7];

for (let i = 0; i < arr.length; i++) {
  console.log(arr[i]);
}
  
    
      
/*
run:
      
1
2
3
4
5
6
7
      
*/

 

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Answer 2

const arr = [1, 2, 3, 4, 5, 6, 7];

let i = 0;
while (i < arr.length) {
  console.log(arr[i]);
  i++;
}
  
    
      
/*
run:
      
1
2
3
4
5
6
7
      
*/

 

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Answer 3

const arr = [1, 2, 3, 4, 5, 6, 7];

for (let i in arr) {
  console.log(arr[i]);
}


  
    
      
/*
run:
      
1
2
3
4
5
6
7
      
*/

 

70+ SQL courses for beginners and professionals