CODEWITHSUNDEEP
javascript
MBŠ
MBŠ

Reputation: 397

JavaScript Objects Target the value by the name of the key

const data = { bmw: { price: 200 } }

let carName = Object.keys(data).toString() 

console.log(carName)
// Output: bmw

let price = data.carName.price

console.log(price)
// Output: TypeError: Cannot read property 'price' of undefined

let price2 = data.bmw.price

console.log(price2)
// Output: 200

why I Can not use the name of the variable to access the price why i do have to type it by myself

thanks

Upvotes: 0

Views: 615

Answers (1)

Tanay
Tanay

Reputation: 889

You have to use:

let price = data[carName].price

console.log(price)

This is because the carName property does not exist on data object, but the key with the value of the carName variable exists on the data object, so you need to use square brackets to get the price of the car

Upvotes: 1

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