default 怎么运行出错

Question

var day=3;

switch (day)

{

case 1:

case 2:

document.write("UI");

break

case 3:

case 4:

document.write("JS");

break

case 5:

case 6:

document.write("UI");

default

document.write("qewqeqqwe");

default 怎么运行出错

Answer 1

明显少了冒号default:

Answer 2

你将day = 7,或者不是1~6中的数就行。