As you can see, the keys are now the name of the items and the corresponding value is another object consisting of two keys - quantity and price.
var itemsToBuy = {
milk: {
quantity : 5,
price: 20
},
bread: {
quantity : 2,
price: 15
},
potato: {
quantity : 3,
price: 10
}
}
I tried but I am getting only undefined output. Want to get data such like :
['milk', 'bread', 'potato']
[20, 15, 10]
const object1 = {
milk: {
quantity : 5,
price: 20
},
bread: {
quantity : 2,
price: 15
},
potato: {
quantity : 3,
price: 10
}
}
console.log(Object.entries(object1).map(([key,value])=> value.price))With Object.keys() you can get the keys of your Object as an array. -> ['milk', 'bread', 'potato']
With Object.entries() in combination with map() you can get the values of the price property as an array. -> [20, 15, 10]
Example:
var itemsToBuy = {
milk: {
quantity : 5,
price: 20
},
bread: {
quantity : 2,
price: 15
},
potato: {
quantity : 3,
price: 10
}
}
const keys = Object.keys(itemsToBuy);
const val = Object.entries(itemsToBuy).map((element)=> element[1].price)
console.log(keys);
console.log(val);
for names:
Object.keys(itemsToBuy) //["milk", "bread", "potato"]
and for prices:
Object.entries(itemsToBuy).map((el)=> el[1].price)//[20, 15, 10]
To get object keys you can use: Object.keys()
let keys = Object.keys(itemsToBuy) // ["milk", "bread", "potato"]
And for the nested values you can get 1st all values
let values = Object.values(itemsToBuy) // [{quantity : 5, price: 20}, {quantity : 2, price: 15}, {quantity : 3, price: 10}]
And then map to return the new array with elements you want to extract ex.price:
let price = values.map(value => value.price) // [20, 15, 10]
