Question

I was hoping I could just assign true / false to a variable if my element exists in an associative array.

I tried this —

var finalDisExist = stepsArray['stepIDFinal'];   

— of course this does exactly what you would think it does (assigning the object to the variable.

But I am pretty sure I have seen something close to this before, can someone tell me what I am missing?

Thanks!
Todd

Answer 1

Perhaps, the quickest and best way is stepsArray.hasOwnProperty('stepIDFinal').

NB: Do NOT use 'stepIDFinal' in stepsArray, since this will check the entire prototype chain for your “hashmap” object and detect toString among others…