无限循环

while( true )
do
   print("循环将永远执行下去")
end

数值for循环

for i=10,1,-2 do
    print(i)
end

泛型for循环

--打印数组a的所有值  
a = {"one", "two", "three"}
for i, v in ipairs(a) do
    print(i, v)
end