javascript for in loop array of objects code example

Example 1: how to get value in array object value using for loop in javascript

const myArray = [{x:100}, {x:200}, {x:300}];

const newArray= myArray.map(element => element.x);
console.log(newArray); // [100, 200, 300]

Example 2: ho to loop trough an array of objects

yourArray.forEach(function (arrayItem) {
    var x = arrayItem.prop1 + 2;
    console.log(x);
});

Example 3: how to loop through an array of objects+

var arr = [[1,2], [3,4], [5,6]];
 for (var i=0; i < arr.length; i++) {
  for (var j=0; j < arr[i].length; j++) {
    console.log(arr[i][j]);
  }
}

Example 4: how to get value in array object value using for loop in javascript

const myArray = [{x:100}, {x:200}, {x:300}];

const sum = myArray.map(element => element.x).reduce((a, b) => a + b, 0);
console.log(sum); // 600 = 0 + 100 + 200 + 300

const average = sum / myArray.length;
console.log(average); // 200

Example 5: javascript loop through array of objects

//Only to be used if you need the numbers
var array = new Array(item1,item2,item3)

for(i=0;i<array.length;i++){
  if(i==2){
    console.log(array[i])
  }
}