Data Races in JavaScript?

Question

Lets assume I run this piece of code.

var score = 0;
for (var i = 0; i < arbitrary_length; i++) {
     async_task(i, function() { score++; }); // incremen         


        

Answer 1

I do think it’s worth noting for others that view this, you have a common mistake in your code. For the variable i you either need to use let or reassign to another variable before passing it into the async_task(). The current implementation will result in each function getting the last value of i.