What is the output of the following? “`js console.log([] + []); console.log({} + []); console.log([] + {}); “`

Question

JavaScript Professional — Medium

What is the output of the following? “`js console.log([] + []); console.log({} + []); console.log([] + {}); “`

Accepted Answer

The output of `console.log([] + [])` is an empty string because when two empty arrays are concatenated, they result in an empty string. The output of `console.log({} + [])` and `console.log([] + {})` is '[object Object]' because when an object is coerced into a string, it becomes '[object Object]'.