blocks|key|1244058|text|我看到/使用的最典型的用法是I和其他东西，这些东西实际上不需要出现在页面上，除了在某些时候需要发送回服务器之外。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1244059|-edit，应该包括更多细节-|1244060|例如，假设您有一些要更新的对象--+UI传回值的集合，服务器可能知道也可能不知道“嘿，这是一个客户对象”，所以您向服务器发出一个请求并说“嘿，给我ID+7”，现在您就有了系统知道的customer对象。更新被应用、验证，不管怎样，现在你的UI得到完整的结果。|1244061|我想一个很好的借口/论点是使用linq。尝试更新linq中的对象，而不是先从DB获取该对象。在获得完整的对象之前，它不会真正意识到它是可以跟踪的东西。|1244062|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Most typical use I see/use is for IDs and other things that really don't need to be on the page for any other reason than its needed at some point to be sent back to the server.

-edit, should've included more detail-

say for instance you have some object you want to update -- the UI sends back a collection of values and the server at that point may or may not know "hey this is a customer object" so you fire off a request to the server and say "hey, give me ID 7" and now you have your customer object as the system knows it. The updates are applied, validated, whatever and now your UI gets the completed result. 

I guess a good excuse/argument is using linq. Try to update an object in linq without getting it from the DB first. It has no real idea that it's something it can keep track of until you get the full object.

blocks|key|1244142|text|它们通常用于在交互过程中存储状态。可以使用Cookie，但有些人禁用了Cookie。也可以使用单个隐藏字段来指向服务器端状态，但是会出现会话粘性问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1244143|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

They are generally used to store state as an interaction progresses. Cookies could be used instead, but some people disable them. Could also use a single hidden field to point at server-side state, but then there are session-stickiness issues.

blocks|key|1029281|text|有很多有用的场景。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1029282|一种是在页面上“存储”一些用户不应该输入的数据。例如，在生成页面时存储用户ID，然后该值将随表单自动提交回服务器。|1029283|另一种情况是安全性。向页面添加一些隐藏的令牌，并检查其在服务器上的存在。这将有助于识别表单是通过浏览器提交的，还是由某个机器人提交的，这些机器人刚刚发布到您网站上的某个url。|1029284|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

There are many useful scenarios.

One is to "store" some data on a page which should not be entered by a user. For example, store the user ID when generate a page, then this value will be auto-submitted with the form back to the server.

One other scenario is security. Add some hidden token to the page and check its existence on the server. This will help identify whether a form was submitted via the browser or by some bot which just posted to some url on your site.

blocks|key|1244274|text|它将一些东西排除在URL之外(就像在查询字符串中一样)，所以它保持了整洁。它还将一些不一定需要的东西排除在会话之外。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1244275|除此之外，我想不出太多其他的好处。|1244276|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

It keeps things out of the URL (as in the querystring) so it keeps that clean. It also keeps things out of Session that may not necessarily need to be in there.

Other than that, I can't think of too many other benefits.

blocks|key|1029402|text|这里有一个原因，在客户端代码(javascript)和服务器端之间传递数据的便捷方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1029403|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

heres one reason, convenient way of passing data between client code (javascript) and server side.

blocks|key|1029443|text|如果在窗体中使用隐藏字段，则会通过包含新控件来增加窗体的负担。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1029444|如果不需要带隐藏域，就不应该带隐藏域，因为它不适合在安全点的基础上。使用隐藏字段不属于好的编程。因为它还会影响应用程序的性能。|1029445|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you are using hidden field in the form, you are increasing the burden of form by including a new control.

If there is no need to take hidden field, you should't take it because it is not suitable on the bases of security point. using hidden field does not come under the good programming. Because it also affect the performance of application.

I have always seen a lot of hidden fields used in web applications. I have worked with code which is written to use a lot of hidden fields and the data values from the visible fields sent back and forth to them. Though I fail to understand why the hidden fields are used. I can almost always think of ways to resolve the same problem without the use of hidden fields. How do hidden fields help in design?

Can anyone tell me what exactly is the advantage that hidden fields provide? Why are hidden fields used?

Why are hidden fields used?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我一直看到web应用程序中使用了很多隐藏字段。我使用的代码使用了大量的隐藏字段和来自可见字段的数据值来回发送给它们。虽然我不能理解为什么要使用隐藏字段。在不使用隐藏字段的情况下，我几乎总能想出解决相同问题的方法。隐藏字段对设计有何帮助？谁能告诉我隐藏字段提供的优势到底是什么？为什么要使用隐藏字段？

问为什么要使用隐藏字段？
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