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I'm surprised. I've always thought of labels as something to be used with goto. What is the purpose of labels in javascript, since it does not implement goto ?

I'm surprised. I've always thought of labels as something to be used with goto. What is the purpose of labels in javascript, since it does not implement goto ? Do you have any idea if it was intended to be used as you describe ?

VMG 13y ago
The best I can come up with is this: ANIMAL: if (isAnimal) { DOG: if (isDog) { POODLE: if (isPoodle) { if (color == green) { break POODLE; // we don't want green poodles } if (age > 10) { break DOG; // we don't want old dogs } if (weight > 20) { break ANIMAL; // we don't want heavy animals } // more poodle conditions } // more dog conditions } // more animal conditions }
- deleted 13y ago
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0x0 13y ago
Several languages support labels with "break" and "continue". It's mostly useful to break out several layers at once (nested loops, etc). See for example Java: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/branch.html http://docs.oracle.com/javase/tutorial/java/nutsandbolts/bra...