My code's output is like this:
let myArray = [{"num": "2", "name": "Jhon"}, {"num": "1", "name": "Sara"}, {"num": "2", "name": "Domnic"}, {"num": "3", "name": "Bravo"}]
How can I access value of num in each field of the list and if num: 2, change its value to 5?
You could use array map:
let myArray = [{
"num": "2",
"name": "Jhon"
}, {
"num": "1",
"name": "Sara"
}, {
"num": "2",
"name": "Domnic"
}, {
"num": "3",
"name": "Bravo"
}]
const result = myArray.map(({...item}) => {
if (item.num == 2)
item.num = "5"
return item
})
console.log(result)Use Array.forEach to change the original Array
let myArray = [{ "num": "2", "name": "Jhon" }, { "num": "1", "name": "Sara" }, { "num": "2", "name": "Domnic" }, { "num": "3", "name": "Bravo" }]
myArray.forEach((node) => node.num = node.num == "2" ? "5" : node.num);
console.log(myArray);If you want to create a new array from the existing one, Use Array.map
let myArray = [{ "num": "2", "name": "Jhon" }, { "num": "1", "name": "Sara" }, { "num": "2", "name": "Domnic" }, { "num": "3", "name": "Bravo" }]
const newArray = myArray.map(({ ...node }) => node.num = node.num == "2" ? "5" : node.num);
console.log(newArray);Please Note: Do not forget to use spread syntax ({ ...node }) else your original array will be modified here.