iterating through an object in js code example

Example 1: javascript loop object

let obj = {
  key1: "value1",
  key2: "value2",
  key3: "value3"
}

Object.keys(obj).forEach(key => {
    console.log(key, obj[key]);
});
// key1 value1
// key2 value2
// key3 value3

// using for in - same output as above
for (let key in obj) {
  let value = obj[key];
  console.log(key, value);
}

Example 2: loop through object javascript

for (var property in object) {
  if (object.hasOwnProperty(property)) {
    // Do things here
  }
}

Example 3: loop through object javascript

const fruits = {
  apple: 28,
  orange: 17,
  pear: 54,
}

const keys = Object.keys(fruits)
console.log(keys) // [apple, orange, pear]