Detect if JavaScript object is a FormData instance

Question

I was looking for a way to check if an object is a FormData instance, similarly to Array.isArray()

Edit: If someone knows about instanceof, they obviously won't need to be pointed to instanceof. Obviously not a duplicate.

Answer 1

Use instanceof

For example:

let formData = new FormData()
let time = new Date()

console.log("statement: formData is a FormData instance", formData instanceof FormData) // statement is true
console.log("statement: time is a FormData instance", time instanceof FormData) // statment is false

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