The JavaScript Interview Handbook: 100+ Interview Questions/

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Challenge: Check Instance of Variables

Challenge: Check Instance of Variables

This is a tricky challenge that will test your understanding of the "instanceof" operator, functions, the "new" operator, and objects in JavaScript.

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Problem statement #

There are two functions in the code below: tempFunc1 and check.

Javascript (babel-node)
var tempFunc1 = function () {
}
function check(){
    var object1 = new tempFunc1();
    var object2 = tempFunc1();   
    
    return (object1 instanceof tempFunc1 === object2 instanceof tempFunc1);     
}
console.log(check())

The check function defines two variables: ...