now = new Date
if (now.getHours() < 6) {
document.write("凌晨好，")
}
else if (now.getHours() < 9) {
document.write("早上好，")
}
else if (now.getHours() < 12) {
document.write("上午好，")
}
else if (now.getHours() < 14) {
document.write("中午好，")
}
else if (now.getHours() < 17) {
document.write("下午好，")
}
else if (now.getHours() < 19) {
document.write("傍晚好，")
}
else if (now.getHours() < 22) {
document.write("晚上好，")
}
else {
document.write("夜深了，")
}