4/19/2021 HTML Form Attributes - javatpoint

HTML form Attribute

HTML <form> element attributes
In HTML there are various attributes available for <form> element which are given below:

HTML action attribute

The action attribute of <form> element defines the process to be performed on form when form is submitted, or it is a URI to
process the form information.

The action attribute value defines the web page where information proceed. It can be .php, .jsp, .asp, etc. or any URL where
you want to process your form.

Note: If action attribute value is blank then form will be processed to the same page.

Example:

<form action="action.html" method="post">

<label>User Name:</label><br>

<input type="text" name="name"><br><br>

<label>User Password</label><br>

<input type="password" name="pass"><br><br>

<input type="submit">

</form>

Test it Now

Output:

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Demo of action attribute of form element

User Name:

User Password

Submit

It will redirect to a new page "action.html" when you click on submit button

HTML method attribute

The method attribute defines the HTTP method which browser used to submit the form. The possible values of method attribute
can be:

post: We can use the post value of method attribute when we want to process the sensitive data as it does not display
the submitted data in URL.

Example:

<form action="action.html" method="post">

get: The get value of method attribute is default value while submitting the form. But this is not secure as it displays
data in URL after submitting the form.

Example:

<form action="action.html" method="get">

When submitting the data, it will display the entered data in the form of:

file:///D:/HTML/action.html?name=JavaTPoint&pass=123

HTML target attribute

The target attribute defines where to open the response after submitting the form. The following are the keywords used with
the target attribute.

_self: If we use _self as an attribute value, then the response will display in current page only.

Example:

<form action="action.html" method="get" target="_self">

_blank: If we use _blank as an attribute it will load the response in a new page.

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Example:

<form action="action.html" method="get" target="_blank">

HTML autocomplete attribute

The HTML autocomplete attribute is a newly added attribute of HTML5 which enables an input field to complete automatically. It
can have two values "on" and "off" which enables autocomplete either ON or OFF. The default value of autocomplete attribute is
"on".

Example:

<form action="action.html" method="get" autocomplete="on">

Example:

<form action="action.html" method="get" autocomplete="off">

Note: it can be used with <form> element and <input> element both.

HTML enctype attribute

The HTML enctype attribute defines the encoding type of form-content while submitting the form to the server. The possible
values of enctype can be:

application/x-www-form-urlencoded: It is default encoding type if the enctype attribute is not included in the form.
All characters are encoded before submitting the form.

Example:

<form action="action.html" method="post" enctype="application/x-www-form-urlencoded" >

multipart/form-data: It does not encode any character. It is used when our form contains file-upload controls.

Example:

<form action="action.html" method="post" enctype="multipart/form-data">

text/plain (HTML5): In this encoding type only space are encoded into + symbol and no any other special character
encoded.

Example:

<form action="action.html" method="post" enctype="text/plain" >

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HTML novalidate attribute HTML5

The novalidate attribute is newly added Boolean attribute of HTML5. If we apply this attribute in form then it does not perform
any type of validation and submit the form.

Example:

<form action = "action.html" method = "get" novalidate>

Test it Now

Output:

Fill the form

Enter name:

Enter age:

Enter email:

Submit

Try to change the form detials with novalidate atttribute and without novalidate attribute and see the difference.

HTML <input> element attribute

HTML name attribute
The HTML name attribute defines the name of an input element. The name and value attribute are included in HTTP request
when we submit the form.

Note: One should not omit the name attribute as when we submit the form the HTTP request includes both name-value pair and
if name is not available it will not process that input field.

Example:

<form action = "action.html" method = "get">

Enter name:<br><input type="name" name="uname"><br>

Enter age:<br><input type="number" name="age"><br>

Enter email:<br><input type="email"><br>

<input type="submit" value="Submit">

</form>

Test it Now

Output:

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Fill the form

Enter name:

Enter age:

Enter email:

Submit

Note: If you will not use name attribute in any input field, then that input field will not be submitted, when
submit the form.

Click on submit and see the URL where email is not included in HTTP request as we have not used name attribute in the email
input field

HTML value attribute

The HTML value attribute defines the initial value or default value of an input field.

Example:

<form>

<label>Enter your Name</label><br>

<input type="text" name="uname" value="Enter Name"><br><br>

<label>Enter your Email-address</label><br>

<input type="text" name="uname" value="Enter email"><br><br>

<label>Enter your password</label><br>

<input type="password" name="pass" value=""><br><br>

<input type="submit" value="login">

</form>

Test it Now

Output:

Fill the form

Enter your Name
Enter Name

Enter your Email-address

Enter email

Enter your password

login

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Note: In password input filed the value attribute will always unclear

HTML required attribute HTML5

HTML required is a Boolean attribute which specifies that user must fill that filed before submitting the form.

Example:

<form>

<label>Enter your Email-address</label><br>

<input type="text" name="uname" required><br><br>

<label>Enter your password</label><br>

<input type="password" name="pass"><br><br>

<input type="submit" value="login">

</form>

Test it Now

Output:

Fill the form

Enter your Email-address

Enter your password

login

If you will try to submit the form without completing email field then it will give an error pop up.

HTML autofocus attribute HTML5

The autofocus is a Boolean attribute which enables a field automatically focused when a webpage loads.

Example:

<form>

<label>Enter your Email-address</label><br>

<input type="text" name="uname" autofocus><br><br>

<label>Enter your password</label><br>

<input type="password" name="pass"><br><br>

<input type="submit" value="login">

</form>

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HTML placeholder attribute HTML5

The placeholder attribute specifies a text within an input field which informs the user about the expected input of that filed.

The placeholder attribute can be used with text, password, email, and URL values.

When the user enters the value, the placeholder will be automatically removed.

Example:

<form>

<label>Enter your name</label><br>

<input type="text" name="uname" placeholder="Your name"><br><br>

<label>Enter your Email address</label><br>

<input type="email" name="email" placeholder="example@gmail.com"><br><br>

<label>Enter your password</label><br>

<input type="password" name="pass" placeholder="your password"><br><br>

<input type="submit" value="login">

</form>

Test it Now

Output:

Registration form

Enter your name

Your name

Enter your Email address

example@gmail.com

Enter your password

your password

login

HTML disabled attribute

The HTML disabled attribute when applied then it disable that input field. The disabled field does not allow the user to interact
with that field.

The disabled input filed does not receive click events, and these input value will not be sent to the server when submitting the
form.

Example:

<input type="text" name="uname" disabled><br><br>

Test it Now

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Output:

Registration form

Enter User name

USER

Enter your Email address

example@gmail.com

Enter your password

your password

login

HTML size attribute

The size attribute controls the size of the input field in typed characters.

Example:

<label>Account holder name</label><br>

<input type="text" name="uname" size="40" required><br><br>

<label>Account number</label><br>

<input type="text" name="an" size="30" required><br><br>

<label>CVV</label><br>

<input type="text" name="cvv" size="1" required><br><br>

Test it Now

Output:

Registration form with disbaled attribute

Account holder name

Account number

CVV

login

HTML form attribute

HTML form attribute allows a user to specify an input filed outside the form but remains the part of the parent form.

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Example:

User email: <br><input type="email" name="email" form="fcontrol" required><br>

<input type="submit" form="fcontrol">

Test it Now

Output:

User Name:

User password:

The email field is outside the form but still it will remain part of the form

User email:

Submit

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