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Jul 3, 2013
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Update 04.2.md #216

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3 changes: 1 addition & 2 deletions ebook/04.2.md
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Expand Up @@ -94,8 +94,6 @@
}
return false

上面这个函数包含在我开源的一个库里面(操作slice和map的库)，[https://github.com/astaxie/beeku](https://github.com/astaxie/beeku)

## 单选按钮
如果我们想要判断radio按钮是否有一个被选中了，我们页面的输出可能就是一个男、女性别的选择，但是也可能一个15岁大的无聊小孩，一手拿着http协议的书，另一只手通过telnet客户端向你的程序在发送请求呢，你设定的性别男值是1，女是2，他给你发送一个3，你的程序会出现异常吗？因此我们也需要像下拉菜单的判断方式类似，判断我们获取的值是我们预设的值，而不是额外的值。

Expand Down Expand Up @@ -130,6 +128,7 @@

return false

上面这个函数`Slice_diff`包含在我开源的一个库里面(操作slice和map的库)，[https://github.com/astaxie/beeku](https://github.com/astaxie/beeku)

## 日期和时间
你想确定用户填写的日期或时间是否有效。例如
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