The JavaScript Interview Handbook: 100+ Interview Questions/

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Challenge: Instance of Array?

Challenge: Instance of Array?

This tricky challenge will test your understanding of the "instanceof" operator, arrays, and objects in JavaScript.

We'll cover the following...

Problem statement #

Take a look at the code below:

Javascript (babel-node)
function check(){
    var tempFunc = function () {}
    
    return new tempFunc instanceof Array; 
}
console.log(check())

The check function contains the definition of tempFunc (line 2). On ...