Open JaeYeopHan opened 2 years ago
β Hey, What's the matter?
function calculate() { let arrayOrString = somethingFunc(); let isArray = Array.isArray(arrayOrString) if (isArray) { console.log(typeof arrayOrString) // string | object (array) π₯ // isn't array? } }
Come back to const!
const
- let arrayOrString = somethingFunc(); + const arrayOrString = somethingFunc(); - let isArray = Array.isArray(arrayOrString) + const isArray = Array.isArray(arrayOrString)
so,
β That's right
function calculate() { const arrayOrString = somethingFunc(); const isArray = Array.isArray(arrayOrString) if (isArray) { - console.log(typeof arrayOrString) // string | object (array) + console.log(typeof arrayOrString) // object (array) π₯° } }
μ΄μ° μ΄λ° μΌμ΄..
β Hey, What's the matter?
Come back to
const
!so,
β That's right