javascript for looop code example
Example 1: javascript loop
let array = ['Item 1', 'Item 2', 'Item 3'];
for (let index = 0; index < array.length; index++) {
console.log("index", index);
console.log("array item", array[index]);
}
Example 2: for in loop javascript
let array = [1,2,3,4,5,6,7,8,9,10];
// our array that we will use the for loop on
for (let i = 0; i < array.length; i++) {
// this loop will console log the element at array[i] starting at 0
// and will continue looping for i < array.length
console.log(array[i]);
// after each loop i will increase by 1
}
// this will console log
// 1
// 2
// 3
// 4
// 5
// 6
// 7
// 8
// 9
// 10
Example 3: for in loop javascript
function diagonalDifference(arr) {
// Write your code here
// return (arr); 11,2,4,4,5,6,10,8,-12
let n = arr.length;
let pri,sec = 0;
pri = sec = 0; //initialize both diagonal sum to 0
for (let i= 0; i < n; i++) {
//console.log( "PRI(arr)= ", i,i);
//console.log( arr[i][i]);
//console.log( "SEC(arr)= ", i,n-i-1);
//console.log( arr[i][n-i-1]);
pri += arr[i][i];
sec += arr[i][n - i - 1];
}
// return |x| is the absolute value of x
if(pri==sec){
return (0);
}else {
if (pri>sec){
return (pri-sec);
}else{
return (sec-pri);
}
}
}