Question

If I have a pair of functions that both set local variables, for example, the variable i in common for loops, and one happens to be called while the other is running, is there any danger of namespace confusion?

Answer 1

As long as you’re using var, like this:

for(var i = 0; i < something; i++)

Then it’s local and you’re fine, if you don’t use var, you have a global variable on your hands, and potential issues. Also if a for loop is nested in another, you should use a different variable name for each loop.