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Hidden Fields in Html Forms

What are Hidden Fields?
Hidden fields are numbers of uses in browsing session. Suppose you have some hidden Database Mechanism or some value or something hide which is very useful to hide your Sql Queries. Receive queries or input text from users and hide them in  hidden field then pass it to another page this is the main work of hidden field.

Hidden Field Code:
<input type="hidden" />
Hidden Field Example:

There is no display of hidden fields because it can't be seen by user nobody can see it but it is holding some value in background of your page same like i made and there is no preview. Now give it some value and we will give it name and id so we can use it in our server scripts.
Hidden Field with Name and Id Attribute:

Hidden Field Code:
<input type="hidden" name="age" id="age" />
Hidden Field Example:
This is the hidden field with name and id attribute. It's hidden because this is already hidden.

Hidden Field with Value Attribute:

Hidden Field Code:
<input type="hidden" value="50" />
Hidden Field Example:

This is the hidden field with value attribute.
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