检测JavaScript对象是否是FormData实例

Question

我一直在寻找一种检查对象是否是FormData实例的方法，类似于Array.isArray()

编辑：如果有人知道instanceof，他们显然不需要指向instanceof。显然不是重复。

Answer 1

使用instanceof

例如：

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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