Unwatch

From PlainOldWebserver

unwatch()

unwatch() cancels a watch().

 var c = 2;
    function handle_it(id,old_val,new_val) {
       document.writeln(id+" is now "+new_val);
       return new_val;
    }
 watch("c", handle_it);
 c = 3;
 unwatch("c");
 c = 4;

Result:

 c is now 3