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Web Development Forms and HTTP Methods

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Questions and Answers

What is the purpose of the REQUIRED ATTRIBUTE in form elements?

It allows users to submit the form without filling out fields.

It limits the number of characters in a text field.

It makes certain fields mandatory for form submission. (correct)

It enables fields to be read-only.

Which boolean attribute can be used to prevent user interaction with an input field?

MINLENGTH

MAXLENGTH

REQUIRED

DISABLED (correct)

What is the correct way to use an HTML entity for a non-breaking space?

&nbsp

&space;

nbsp;

  (correct)

What do the MINLENGTH and MAXLENGTH attributes control?

The number of characters allowed in a text field. Signup and view all the answers

What HTML element is used in conjunction with the DETAILS ELEMENT to provide a heading?

SUMMARY Signup and view all the answers

Which of the following is NOT a common HTML entity?

&pdf; Signup and view all the answers

What character does the HTML entity < represent?

Less than sign (<) Signup and view all the answers

What is the function of HTML comments?

They are used for adding explanations in the source code. Signup and view all the answers

What is the primary purpose of the FORM ELEMENT in web development?

To act as a container for input elements Signup and view all the answers

Which HTTP method is used to create new resources on a server?

POST Signup and view all the answers

What does the 'action' attribute in a form element specify?

The URL where the data is sent Signup and view all the answers

If you want to provide a hint inside the input box for users, which attribute would you use?

placeholder Signup and view all the answers

Which HTTP method would you use to partially update existing data on a server?

PATCH Signup and view all the answers

What will the 'value' attribute do when used in an input element?

Fill the input box with a default value Signup and view all the answers

Which of the following input types would be used to capture a phone number?

tel Signup and view all the answers

What will happen if a user starts typing in an input field with a placeholder attribute?

The placeholder text will disappear Signup and view all the answers

Study Notes

Forms

Forms are used to collect user input, that can be used to store information, or authenticate users
The FORM ELEMENT is a container for all input elements
- The action attribute specifies the URL where the data is sent
- The method attribute determines the HTTP method to use (POST or GET)

HTTP Methods

Describe the action the server should perform with the submitted data
GET retrieves data from the server
POST Creates new resources (e.g., user signup)
PUT Updates existing data on the server, replacing current content with new data
PATCH Partially updates existing data on the server, modifying only specified fields
DELETE Removes data from the server
OPTIONS Asks the server which HTTP methods are supported for a specific resource

Input Element

The INPUT ELEMENT is the core building block for user input
The type attribute determines the type of data captured (e.g. text, password, email)
- text Displays a text input field
- password Displays a password input field (masked)
- number Displays a number input field
- url Displays a URL input field
- tel Displays a phone number input field
- date Displays a date input field
- datetime-local Displays a date and time input field
- month Displays a month input field
- week Displays a week input field
- color Displays a color picker
- file Displays a file upload input field
- reset Displays a button to reset the form
- submit Displays a button to submit the form
The value attribute sets a default value for the field, which is displayed when the website loads
The placeholder attribute shows a hint or example inside the input box, which disappears when the user starts typing
The disabled attribute prevents users from interacting with the input field

Validating Input Elements

The required attribute makes a field mandatory, preventing submission unless the field is filled out
The minlength and maxlength attributes set limits on the number of characters that can be entered in a text field

Details Element

The details element provides expandable sections with additional information
The summary element is used along with details to specify a visible heading for the details

HTML Entities

Used to display special characters
Formatted using &entity_name;
Commonly used entities:
- Non-breaking space
- < Less than sign
- & Ampersand
- " Double quotation mark
- ' Single quotation mark
- £ Pound
- € Euro
- © Copyright
- ® Trademark

HTML Comments

Comment tags are enclosed within 
Allow you to insert notes and explanations into your code
Comments are not displayed in browsers

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Description

This quiz covers essential concepts about forms and HTTP methods used in web development. Learn the purpose of form elements, various input types, and how different HTTP methods interact with server data. Test your knowledge on how to effectively use forms and understand server communication.