javascript check if dictionary

Question

I have a simple program like:

var a = {\'a\': 1, \'b\': 2}
console.log(a)
console.log(a instanceof Array)
console.log(a.constructor instanceof Array)
         


        

Answer 1

The simplest approach to check if something is a dictionary in Javascript in a way that will not also return true when given an array is:

if (a.constructor == Object) {
    // code here...
}

This was inspired by the answer here.