What is the point of using labels in javascript (label: stuff here) outside switches?

Question

What is the point of using labels in javascript (label: stuff here) outside switches?

Answer 1

You can use them as goto statements on break and continue, though admittedly you rarely see this in practice. You can find a few examples here.

Here's a quick one:

myLabel:
for(var i=0; i<10; i++) {
  if(i==0) continue myLabel; //start over for some reason
}    

Answer 2

They're also useful in loops:

var x, y;

outer: for (x = 0; x < 10; ++x) {
    for (y = 0; y < 10; ++y) {
       if (checkSomething(x, y)) {
           break outer;
       }
    }
}

...which breaks out of both loops if checkSomething returns true.

I've never actually coded one of those, I've always split the inner loop off to a function or similar, but you can do it that way. Some people consider it bad style, akin to goto (which JavaScript doesn't have).