SlideShare a Scribd company logo
1 of 42
Download to read offline
webDeV@rgu
getting information from users
html forms
quick tip…
THE “SECURITY HACK” AT THE END OFTHIS PRESENTATION IS SOMETHINGTHAT EVERYONE SHOULD KNOW!
• HTML Forms
• Form Presentation
• Form Elements
• Input Types
• Input Attributes
• Form Security
Overview
HTML
Forms
• Capturing user input
• registering user information
• entering username and password for login
• posting status updates to social networks
• submitting a search query
• taking a questionnaire
• Transmitting user input elsewhere
• send to client side JavaScript for validation
• send to server side process (PHP, Java,
JavaScript)
Purpose of html Forms
Form
Presentation
a simple html form
• The form tag contains all the input elements
• <form> … </form>
• Input elements can be of <input type=“” />
• Text/password/file or textarea
• Radio button or Checkbox
• Select boxes
• All input elements should be given a form label
• Improves accessibility if using a screen reader
• <label> … </label>
• Fieldsets can be used to graphically group input
elements together
• <fieldset> … </fieldset>
Basic form elements
<form>
<fieldset>
<legend>Please leave a comment...</legend>
<label for="name">Name:</label>
<input type="text" name="name" value="" />
<label for="email">Email:</label>
<input type="text" name="email" value="" />
<label for="comments">Comment:</label>
<textarea name="comments" cols="45“ rows="5">
</textarea>
<input type="submit" value="Submit" />
</fieldset>
</form>
• Best practice is to use CSS
• However, tables are still used a lot for layout of
form elements
• better than a messy form
Form Presentation
<form>
<fieldset>
<legend>Please leave a comment...</legend>
<label for="name">Name:</label>
<input type="text" name="name" value="" />
<br>
<label for="email">Email:</label>
<input type="text" name="email" value="" />
<br>
<label for="comments">Comment:</label>
<textarea name="comments" cols="45" rows="5"></textarea>
<br>
<input type="submit" value="Submit" />
</fieldset>
</form>
<style> input, textarea {width: 400px;} </style>
<form>
<fieldset>
<legend>Please leave a comment...</legend>
<table>
<tr>
<td><label>Name:</label></td>
<td><input type="text" name="name" value="" /></td>
</tr>
<tr>
<td><label>Email:</label></td>
<td><input type="text" name="email" value="" /></td>
</tr>
<tr>
<td><label>Comment:</label></td>
<td><textarea name="comments" cols="45" rows="5">
</textarea></td>
</tr>
<tr>
<td colspan=2><input type="submit" value="Submit" /></td>
</tr>
</table>
</fieldset>
</form>
Column 1 Column 2
Row 1
Row 2
Row 3
Row 4
Form Presentation
• Best practice is to use CSS
• However, tables are still used a lot for layout of
form elements
• better than a messy form
• Next week we will look at CSS in a lot more detail
so that you can get the hang of it.
Form
elements
input types
• Provides simple text input
text
<form>
<label for=“firstname>First name:</label><br>
<input type="text" name="firstname"><br>
Last name:<br>
<input type="text" name="lastname">
</form>
• Provides text input that is hidden from the user
password
<form>
User name:<br>
<input type="text" name="username"><br>
User password:<br>
<input type="password" name="psw">
</form>
<form action="action_page.php">
First name:<br>
<input type="text" name="firstname" value="Mike"><br>
Last name:<br>
<input type="text" name="lastname" value="Crabb"><br><br>
<input type="submit" value="Submit">
</form>
• Submit button for forms
submit
<form>
Birthday:
<input type="date" name="bday">
</form>
• The <input type="date"> is used for input fields that
should contain a date.
date
• Provides for a selection of zero or more items from
a list of options
checkboxes
<input type="checkbox" name="pets" value="loveCats">I love cats <br>

<input type="checkbox" name="pets" value="loveDogs">I love dogs

• Provides for only one selection from a list of options
Radio buttons
<input type="radio" name="cats" value="loveCats">I love cats <br>

<input type="radio" name="cats" value="hateCats">I have no soul
• Choose from a list of options
• use the <select> tag
• list <options>
Selection (drop down) Box
<label for="degreeTitle">Degree Title:</label>

<select name="degreeTitle">

<option value="cs">Computer Science</option>

<option value="dm">Digital Media</option>

<option value="cnmd">Computer Network Management and Design</option
</select>
• Provides for only one selection from a list of options
coloUr
<form>
Select your favorite color:
<input type="color" name="favcolor">
</form>
• Provides for only one selection from a list of options
email
<form>
E-mail:
<input type="email" name="email">
<input type="submit">
</form>
• Provides for only one selection from a list of options
URL
<form>
Add your homepage:
<input type="url" name="homepage">
</form>
HTML5 form improvements
email
url
Reset
color
check input is valid email address
(something@something.something)
check input is valid web address
(http://www.something.something)
Clears everything on the page
Select a colour
american spelling
Form
elements
input attributes
• The value attribute specifies the initial value for an
input field:
value
<form action="">
First name:<br>
<input type="text" name="firstname" value="John">
<br>
Last name:<br>
<input type="text" name="lastname">
</form>
• The readonly attribute specifies that the input field
is read only (cannot be changed)
read only
<form action="">
First name:<br>
<input type="text" name="firstname" value="John" readonly>
<br>
Last name:<br>
<input type="text" name="lastname">
</form>
• The disabled attribute specifies that the input field
is disabled.
• A disabled element is un-usable and un-clickable.
• Disabled elements will not be submitted
Disabled
<form action="">
First name:<br>
<input type="text" name="firstname" value="John" disabled>
<br>
Last name:<br>
<input type="text" name="lastname">
</form>
• The size attribute specifies the size (in characters)
for the input field
size
<form action="">
First name:<br>
<input type="text" name="firstname" value="John" size="40">
<br>
Last name:<br>
<input type="text" name="lastname">
</form>
• The maxlength attribute specifies the maximum
allowed length for the input field:
maxlength
<form action="">
First name:<br>
<input type="text" name="firstname" maxlength="10">
<br>
Last name:<br>
<input type="text" name="lastname">
</form>
• The autocomplete attribute specifies whether a
form or input field should have autocomplete on or
off
autocomplete
<form autocomplete="on">
First name:<input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
E-mail: <input type="email" name="email"
autocomplete="off"><br>
<input type="submit">
</form>
placeholder
• The placeholder attribute specifies a hint that
describes the expected value of an input field (a
sample value or a short description of the format).
<input type="text" name="fname" placeholder="First name">
required
• When present, it specifies that an input field must
be filled out before submitting the form.
• The required attribute works with the following
input types: text, search, url, tel, email, password,
date pickers, number, checkbox, radio, and file.
Username: <input type="text" name="username" required>
This one is
important
form
security
form security
• Forms can be quite insecure when we are using
them, we need to make sure that the right data
is being seen by the right people
• and that no-one can get access to the
really sensitive data!
For example…here’s how to find our a password on
an unsecured computer
PS - DON’T DO THIS ONE SOMEONE ELSES
COMPUTER - YOU’ll GET INTO A LOT OF TROUBLE!!
I’ve visited a website and have put in my
username and password into the box
provided. Let’s say that now I have to step
away from my computer for 5 seconds…
Some unsavoury character comes along
and looks at my screen. They right click on
the password field and then go to inspect, I
wonder what they are up to?
Now they are looking at the HTML for this
web page and have an interest in the field
that my password is in. It’s ok…its secure
(it really isn’t).
They change the form element from:
<input type=“Password”>
to
<Input Type=“text”>
and now my password is being shown to the
world #awkward!
• HTML Forms
• Form Presentation
• Form Elements
• Input Types
• Input Attributes
• Form Security
Recap
get in touch!
@mike_crabb
Lecturer in Web Development at Robert Gordon University
(Scotland)
@rgucomputing
Robert Gordon University - School of Computing Science and
Digital Media

More Related Content

What's hot

Design Thinking Frameworks Reference Guide
Design Thinking Frameworks Reference GuideDesign Thinking Frameworks Reference Guide
Design Thinking Frameworks Reference Guide
Operational Excellence Consulting
 

What's hot (20)

Infographic Thinking Workshop
Infographic Thinking WorkshopInfographic Thinking Workshop
Infographic Thinking Workshop
 
Design Thinking Frameworks Reference Guide
Design Thinking Frameworks Reference GuideDesign Thinking Frameworks Reference Guide
Design Thinking Frameworks Reference Guide
 
12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at Work12 Ways to Increase Your Influence at Work
12 Ways to Increase Your Influence at Work
 
Design Thinking for Change Management
Design Thinking for Change ManagementDesign Thinking for Change Management
Design Thinking for Change Management
 
The Shift: UX Designer as Business Consultant (2016)
The Shift: UX Designer as Business Consultant (2016)The Shift: UX Designer as Business Consultant (2016)
The Shift: UX Designer as Business Consultant (2016)
 
Google data studio
Google data studioGoogle data studio
Google data studio
 
In order for UX to achieve it’s potential, we need to reframe it as a profess...
In order for UX to achieve it’s potential, we need to reframe it as a profess...In order for UX to achieve it’s potential, we need to reframe it as a profess...
In order for UX to achieve it’s potential, we need to reframe it as a profess...
 
Introduction to Jobs to Be Done
Introduction to Jobs to Be DoneIntroduction to Jobs to Be Done
Introduction to Jobs to Be Done
 
The Presenter Manifesto : 8 Distinctions of a World Class Presenter by @eric_...
The Presenter Manifesto : 8 Distinctions of a World Class Presenter by @eric_...The Presenter Manifesto : 8 Distinctions of a World Class Presenter by @eric_...
The Presenter Manifesto : 8 Distinctions of a World Class Presenter by @eric_...
 
Visual Design with Data
Visual Design with DataVisual Design with Data
Visual Design with Data
 
Pitching hacks
Pitching hacksPitching hacks
Pitching hacks
 
HTML Semantic Tags
HTML Semantic TagsHTML Semantic Tags
HTML Semantic Tags
 
Strategic Storytelling | Business Presentation Techniques
Strategic Storytelling | Business Presentation TechniquesStrategic Storytelling | Business Presentation Techniques
Strategic Storytelling | Business Presentation Techniques
 
Context As A Content Strategy: Creating More Meaningful Web Experiences Throu...
Context As A Content Strategy: Creating More Meaningful Web Experiences Throu...Context As A Content Strategy: Creating More Meaningful Web Experiences Throu...
Context As A Content Strategy: Creating More Meaningful Web Experiences Throu...
 
Prototyping
PrototypingPrototyping
Prototyping
 
Fight for Yourself: How to Sell Your Ideas and Crush Presentations
Fight for Yourself: How to Sell Your Ideas and Crush PresentationsFight for Yourself: How to Sell Your Ideas and Crush Presentations
Fight for Yourself: How to Sell Your Ideas and Crush Presentations
 
the art of creativity: asking provocative questions
the art of creativity: asking provocative questionsthe art of creativity: asking provocative questions
the art of creativity: asking provocative questions
 
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldaba
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika AldabaLightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldaba
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldaba
 
What 33 Successful Entrepreneurs Learned From Failure
What 33 Successful Entrepreneurs Learned From FailureWhat 33 Successful Entrepreneurs Learned From Failure
What 33 Successful Entrepreneurs Learned From Failure
 
How to Cook Up an Awesome Deck
How to Cook Up an Awesome DeckHow to Cook Up an Awesome Deck
How to Cook Up an Awesome Deck
 

Viewers also liked

Viewers also liked (20)

Montreal Girl Geeks: Building the Modern Web
Montreal Girl Geeks: Building the Modern WebMontreal Girl Geeks: Building the Modern Web
Montreal Girl Geeks: Building the Modern Web
 
DESIGN THE PRIORITY, PERFORMANCE 
AND UX
DESIGN THE PRIORITY, PERFORMANCE 
AND UXDESIGN THE PRIORITY, PERFORMANCE 
AND UX
DESIGN THE PRIORITY, PERFORMANCE 
AND UX
 
Internet of Things - The Tip of an Iceberg
Internet of Things - The Tip of an IcebergInternet of Things - The Tip of an Iceberg
Internet of Things - The Tip of an Iceberg
 
Introduction to Development for the Internet
Introduction to Development for the InternetIntroduction to Development for the Internet
Introduction to Development for the Internet
 
Node.js and The Internet of Things
Node.js and The Internet of ThingsNode.js and The Internet of Things
Node.js and The Internet of Things
 
Finding Our Happy Place in the Internet of Things
Finding Our Happy Place in the Internet of ThingsFinding Our Happy Place in the Internet of Things
Finding Our Happy Place in the Internet of Things
 
Build Features, Not Apps
Build Features, Not AppsBuild Features, Not Apps
Build Features, Not Apps
 
Valentine's Day
Valentine's DayValentine's Day
Valentine's Day
 
Health and Well-Being on the Social Web
Health and Well-Being on the Social WebHealth and Well-Being on the Social Web
Health and Well-Being on the Social Web
 
How Much Further Will Internet Stocks Fall? (Share Price Performance)
How Much Further Will Internet Stocks Fall? (Share Price Performance)How Much Further Will Internet Stocks Fall? (Share Price Performance)
How Much Further Will Internet Stocks Fall? (Share Price Performance)
 
Net neutrality: The Basics
Net neutrality: The BasicsNet neutrality: The Basics
Net neutrality: The Basics
 
25 Festive Fonts For Women Oriented Businesses!
25 Festive Fonts For Women Oriented Businesses!25 Festive Fonts For Women Oriented Businesses!
25 Festive Fonts For Women Oriented Businesses!
 
Digital in 2016
Digital in 2016Digital in 2016
Digital in 2016
 
Designing Teams for Emerging Challenges
Designing Teams for Emerging ChallengesDesigning Teams for Emerging Challenges
Designing Teams for Emerging Challenges
 
Study: The Future of VR, AR and Self-Driving Cars
Study: The Future of VR, AR and Self-Driving CarsStudy: The Future of VR, AR and Self-Driving Cars
Study: The Future of VR, AR and Self-Driving Cars
 
Mobile-First SEO - The Marketers Edition #3XEDigital
Mobile-First SEO - The Marketers Edition #3XEDigitalMobile-First SEO - The Marketers Edition #3XEDigital
Mobile-First SEO - The Marketers Edition #3XEDigital
 
Mobile Is Eating the World (2016)
Mobile Is Eating the World (2016)Mobile Is Eating the World (2016)
Mobile Is Eating the World (2016)
 
UX, ethnography and possibilities: for Libraries, Museums and Archives
UX, ethnography and possibilities: for Libraries, Museums and ArchivesUX, ethnography and possibilities: for Libraries, Museums and Archives
UX, ethnography and possibilities: for Libraries, Museums and Archives
 
IT in Healthcare
IT in HealthcareIT in Healthcare
IT in Healthcare
 
How to Become a Thought Leader in Your Niche
How to Become a Thought Leader in Your NicheHow to Become a Thought Leader in Your Niche
How to Become a Thought Leader in Your Niche
 

Similar to Getting Information through HTML Forms

Form using html and java script validation
Form using html and java script validationForm using html and java script validation
Form using html and java script validation
Maitree Patel
 
HTML5 - Forms
HTML5 - FormsHTML5 - Forms
HTML5 - Forms
tina1357
 
FormL13.pptx
FormL13.pptxFormL13.pptx
FormL13.pptx
serd4
 

Similar to Getting Information through HTML Forms (20)

Html tables, forms and audio video
Html tables, forms and audio videoHtml tables, forms and audio video
Html tables, forms and audio video
 
Web forms and html (lect 4)
Web forms and html (lect 4)Web forms and html (lect 4)
Web forms and html (lect 4)
 
Form using html and java script validation
Form using html and java script validationForm using html and java script validation
Form using html and java script validation
 
Forms
FormsForms
Forms
 
Html forms
Html formsHtml forms
Html forms
 
htmlcss.pdf
htmlcss.pdfhtmlcss.pdf
htmlcss.pdf
 
CSS_Forms.pdf
CSS_Forms.pdfCSS_Forms.pdf
CSS_Forms.pdf
 
Html forms
Html formsHtml forms
Html forms
 
web-lab2 for computer science html tss css java
web-lab2 for computer science html tss css javaweb-lab2 for computer science html tss css java
web-lab2 for computer science html tss css java
 
Web engineering - HTML Form
Web engineering -  HTML FormWeb engineering -  HTML Form
Web engineering - HTML Form
 
HTML Forms Basics by Kamran Solangi.pptx
HTML Forms Basics by Kamran Solangi.pptxHTML Forms Basics by Kamran Solangi.pptx
HTML Forms Basics by Kamran Solangi.pptx
 
HTML5 - Forms
HTML5 - FormsHTML5 - Forms
HTML5 - Forms
 
Forms Part 1
Forms Part 1Forms Part 1
Forms Part 1
 
Unit 2 (it workshop)
Unit 2 (it workshop)Unit 2 (it workshop)
Unit 2 (it workshop)
 
FormL13.pptx
FormL13.pptxFormL13.pptx
FormL13.pptx
 
HTML
HTML HTML
HTML
 
Chapter 9: Forms
Chapter 9: FormsChapter 9: Forms
Chapter 9: Forms
 
uptu web technology unit 2 html
uptu web technology unit 2 htmluptu web technology unit 2 html
uptu web technology unit 2 html
 
Lesson 15
Lesson 15Lesson 15
Lesson 15
 
INTRODUCTION TO HTML & CSS .pptx
INTRODUCTION TO HTML & CSS .pptxINTRODUCTION TO HTML & CSS .pptx
INTRODUCTION TO HTML & CSS .pptx
 

More from Mike Crabb

More from Mike Crabb (20)

Hard to Reach Users in Easy to Reach Places
Hard to Reach Users in Easy to Reach PlacesHard to Reach Users in Easy to Reach Places
Hard to Reach Users in Easy to Reach Places
 
Accessible and Assistive Interfaces
Accessible and Assistive InterfacesAccessible and Assistive Interfaces
Accessible and Assistive Interfaces
 
Accessible Everyone
Accessible EveryoneAccessible Everyone
Accessible Everyone
 
The Peer Review Process
The Peer Review ProcessThe Peer Review Process
The Peer Review Process
 
Managing Quality In Qualitative Research
Managing Quality In Qualitative ResearchManaging Quality In Qualitative Research
Managing Quality In Qualitative Research
 
Analysing Qualitative Data
Analysing Qualitative DataAnalysing Qualitative Data
Analysing Qualitative Data
 
Conversation Discourse and Document Analysis
Conversation Discourse and Document AnalysisConversation Discourse and Document Analysis
Conversation Discourse and Document Analysis
 
Ethnographic and Observational Research
Ethnographic and Observational ResearchEthnographic and Observational Research
Ethnographic and Observational Research
 
Doing Focus Groups
Doing Focus GroupsDoing Focus Groups
Doing Focus Groups
 
Doing Interviews
Doing InterviewsDoing Interviews
Doing Interviews
 
Designing Qualitative Research
Designing Qualitative ResearchDesigning Qualitative Research
Designing Qualitative Research
 
Introduction to Accessible Design
Introduction to Accessible DesignIntroduction to Accessible Design
Introduction to Accessible Design
 
Accessible Everyone
Accessible EveryoneAccessible Everyone
Accessible Everyone
 
Texture and Glyph Design
Texture and Glyph DesignTexture and Glyph Design
Texture and Glyph Design
 
Pattern Perception and Map Design
Pattern Perception and Map DesignPattern Perception and Map Design
Pattern Perception and Map Design
 
Dealing with Enterprise Level Data
Dealing with Enterprise Level DataDealing with Enterprise Level Data
Dealing with Enterprise Level Data
 
Using Cloud in an Enterprise Environment
Using Cloud in an Enterprise EnvironmentUsing Cloud in an Enterprise Environment
Using Cloud in an Enterprise Environment
 
Teaching Cloud to the Programmers of Tomorrow
Teaching Cloud to the Programmers of TomorrowTeaching Cloud to the Programmers of Tomorrow
Teaching Cloud to the Programmers of Tomorrow
 
Sql Injection and XSS
Sql Injection and XSSSql Injection and XSS
Sql Injection and XSS
 
Forms and Databases in PHP
Forms and Databases in PHPForms and Databases in PHP
Forms and Databases in PHP
 

Recently uploaded

一比一原版格林威治大学毕业证成绩单如何办理
一比一原版格林威治大学毕业证成绩单如何办理一比一原版格林威治大学毕业证成绩单如何办理
一比一原版格林威治大学毕业证成绩单如何办理
cyebo
 
Knowing, Understanding and Planning Cities- Role and Relevance Physical Plan...
Knowing, Understanding and Planning Cities- Role and Relevance  Physical Plan...Knowing, Understanding and Planning Cities- Role and Relevance  Physical Plan...
Knowing, Understanding and Planning Cities- Role and Relevance Physical Plan...
JIT KUMAR GUPTA
 
Presentation on 3D Printing.pptx presentation
Presentation on 3D Printing.pptx presentationPresentation on 3D Printing.pptx presentation
Presentation on 3D Printing.pptx presentation
ajroy0196
 

Recently uploaded (20)

Dos And Dont's Of Logo Design For 2024..
Dos And Dont's Of Logo Design For 2024..Dos And Dont's Of Logo Design For 2024..
Dos And Dont's Of Logo Design For 2024..
 
Bit Dhrumi shah Graphic Designer portfolio
Bit Dhrumi shah Graphic Designer portfolioBit Dhrumi shah Graphic Designer portfolio
Bit Dhrumi shah Graphic Designer portfolio
 
Recycled Modular Low Cost Construction .pdf
Recycled Modular Low Cost Construction .pdfRecycled Modular Low Cost Construction .pdf
Recycled Modular Low Cost Construction .pdf
 
Abdulaziz Tariq Abdulaziz Mustafa CV 2024
Abdulaziz Tariq Abdulaziz Mustafa CV 2024Abdulaziz Tariq Abdulaziz Mustafa CV 2024
Abdulaziz Tariq Abdulaziz Mustafa CV 2024
 
spColumn-Manual design column by spcolumn software.pdf
spColumn-Manual design column by spcolumn software.pdfspColumn-Manual design column by spcolumn software.pdf
spColumn-Manual design column by spcolumn software.pdf
 
NO1 Popular kala jadu karne wale ka contact number kala jadu karne wale baba ...
NO1 Popular kala jadu karne wale ka contact number kala jadu karne wale baba ...NO1 Popular kala jadu karne wale ka contact number kala jadu karne wale baba ...
NO1 Popular kala jadu karne wale ka contact number kala jadu karne wale baba ...
 
Claire's designing portfolio presentation
Claire's designing portfolio presentationClaire's designing portfolio presentation
Claire's designing portfolio presentation
 
The Impact of Artificial Intelligence on Modern Healthcare.pptx
The Impact of Artificial Intelligence on Modern Healthcare.pptxThe Impact of Artificial Intelligence on Modern Healthcare.pptx
The Impact of Artificial Intelligence on Modern Healthcare.pptx
 
一比一原版格林威治大学毕业证成绩单如何办理
一比一原版格林威治大学毕业证成绩单如何办理一比一原版格林威治大学毕业证成绩单如何办理
一比一原版格林威治大学毕业证成绩单如何办理
 
Knowing, Understanding and Planning Cities- Role and Relevance Physical Plan...
Knowing, Understanding and Planning Cities- Role and Relevance  Physical Plan...Knowing, Understanding and Planning Cities- Role and Relevance  Physical Plan...
Knowing, Understanding and Planning Cities- Role and Relevance Physical Plan...
 
Design lessons from Singapore | Volume 3
Design lessons from Singapore | Volume 3Design lessons from Singapore | Volume 3
Design lessons from Singapore | Volume 3
 
Eric Parein CV. Parein in English is best pronounced as PARE-IN
Eric Parein CV. Parein in English is best pronounced as PARE-INEric Parein CV. Parein in English is best pronounced as PARE-IN
Eric Parein CV. Parein in English is best pronounced as PARE-IN
 
Spring 2024 wkrm_Enhancing Campus Mobility.pdf
Spring 2024 wkrm_Enhancing Campus Mobility.pdfSpring 2024 wkrm_Enhancing Campus Mobility.pdf
Spring 2024 wkrm_Enhancing Campus Mobility.pdf
 
CADD 141 - BIRD Scooter - Cup Holder Photos.pdf
CADD 141 - BIRD Scooter - Cup Holder Photos.pdfCADD 141 - BIRD Scooter - Cup Holder Photos.pdf
CADD 141 - BIRD Scooter - Cup Holder Photos.pdf
 
Presentation on 3D Printing.pptx presentation
Presentation on 3D Printing.pptx presentationPresentation on 3D Printing.pptx presentation
Presentation on 3D Printing.pptx presentation
 
Webhost NVME Cloud VPS Hosting1234455678
Webhost NVME Cloud VPS Hosting1234455678Webhost NVME Cloud VPS Hosting1234455678
Webhost NVME Cloud VPS Hosting1234455678
 
Heidi Livengood's Professional CADD Portfolio
Heidi Livengood's Professional CADD PortfolioHeidi Livengood's Professional CADD Portfolio
Heidi Livengood's Professional CADD Portfolio
 
FW25-26 Fashion Key Items Trend Book Peclers Paris
FW25-26 Fashion Key Items Trend Book Peclers ParisFW25-26 Fashion Key Items Trend Book Peclers Paris
FW25-26 Fashion Key Items Trend Book Peclers Paris
 
Explaining the Hidden Treasures of Modern Bathroom Design — freixadesign.pdf
Explaining the Hidden Treasures of Modern Bathroom Design — freixadesign.pdfExplaining the Hidden Treasures of Modern Bathroom Design — freixadesign.pdf
Explaining the Hidden Treasures of Modern Bathroom Design — freixadesign.pdf
 
Real Smart Art Infographics by Slidesgo.pptx
Real Smart Art Infographics by Slidesgo.pptxReal Smart Art Infographics by Slidesgo.pptx
Real Smart Art Infographics by Slidesgo.pptx
 

Getting Information through HTML Forms

  • 1. webDeV@rgu getting information from users html forms quick tip… THE “SECURITY HACK” AT THE END OFTHIS PRESENTATION IS SOMETHINGTHAT EVERYONE SHOULD KNOW!
  • 2. • HTML Forms • Form Presentation • Form Elements • Input Types • Input Attributes • Form Security Overview
  • 4. • Capturing user input • registering user information • entering username and password for login • posting status updates to social networks • submitting a search query • taking a questionnaire • Transmitting user input elsewhere • send to client side JavaScript for validation • send to server side process (PHP, Java, JavaScript) Purpose of html Forms
  • 7. • The form tag contains all the input elements • <form> … </form> • Input elements can be of <input type=“” /> • Text/password/file or textarea • Radio button or Checkbox • Select boxes • All input elements should be given a form label • Improves accessibility if using a screen reader • <label> … </label> • Fieldsets can be used to graphically group input elements together • <fieldset> … </fieldset> Basic form elements
  • 8. <form> <fieldset> <legend>Please leave a comment...</legend> <label for="name">Name:</label> <input type="text" name="name" value="" /> <label for="email">Email:</label> <input type="text" name="email" value="" /> <label for="comments">Comment:</label> <textarea name="comments" cols="45“ rows="5"> </textarea> <input type="submit" value="Submit" /> </fieldset> </form>
  • 9. • Best practice is to use CSS • However, tables are still used a lot for layout of form elements • better than a messy form Form Presentation
  • 10. <form> <fieldset> <legend>Please leave a comment...</legend> <label for="name">Name:</label> <input type="text" name="name" value="" /> <br> <label for="email">Email:</label> <input type="text" name="email" value="" /> <br> <label for="comments">Comment:</label> <textarea name="comments" cols="45" rows="5"></textarea> <br> <input type="submit" value="Submit" /> </fieldset> </form>
  • 11. <style> input, textarea {width: 400px;} </style> <form> <fieldset> <legend>Please leave a comment...</legend> <table> <tr> <td><label>Name:</label></td> <td><input type="text" name="name" value="" /></td> </tr> <tr> <td><label>Email:</label></td> <td><input type="text" name="email" value="" /></td> </tr> <tr> <td><label>Comment:</label></td> <td><textarea name="comments" cols="45" rows="5"> </textarea></td> </tr> <tr> <td colspan=2><input type="submit" value="Submit" /></td> </tr> </table> </fieldset> </form>
  • 12. Column 1 Column 2 Row 1 Row 2 Row 3 Row 4
  • 13. Form Presentation • Best practice is to use CSS • However, tables are still used a lot for layout of form elements • better than a messy form • Next week we will look at CSS in a lot more detail so that you can get the hang of it.
  • 15. • Provides simple text input text <form> <label for=“firstname>First name:</label><br> <input type="text" name="firstname"><br> Last name:<br> <input type="text" name="lastname"> </form>
  • 16. • Provides text input that is hidden from the user password <form> User name:<br> <input type="text" name="username"><br> User password:<br> <input type="password" name="psw"> </form>
  • 17. <form action="action_page.php"> First name:<br> <input type="text" name="firstname" value="Mike"><br> Last name:<br> <input type="text" name="lastname" value="Crabb"><br><br> <input type="submit" value="Submit"> </form> • Submit button for forms submit
  • 18. <form> Birthday: <input type="date" name="bday"> </form> • The <input type="date"> is used for input fields that should contain a date. date
  • 19. • Provides for a selection of zero or more items from a list of options checkboxes <input type="checkbox" name="pets" value="loveCats">I love cats <br>
 <input type="checkbox" name="pets" value="loveDogs">I love dogs

  • 20. • Provides for only one selection from a list of options Radio buttons <input type="radio" name="cats" value="loveCats">I love cats <br>
 <input type="radio" name="cats" value="hateCats">I have no soul
  • 21. • Choose from a list of options • use the <select> tag • list <options> Selection (drop down) Box <label for="degreeTitle">Degree Title:</label>
 <select name="degreeTitle">
 <option value="cs">Computer Science</option>
 <option value="dm">Digital Media</option>
 <option value="cnmd">Computer Network Management and Design</option </select>
  • 22. • Provides for only one selection from a list of options coloUr <form> Select your favorite color: <input type="color" name="favcolor"> </form>
  • 23. • Provides for only one selection from a list of options email <form> E-mail: <input type="email" name="email"> <input type="submit"> </form>
  • 24. • Provides for only one selection from a list of options URL <form> Add your homepage: <input type="url" name="homepage"> </form>
  • 25. HTML5 form improvements email url Reset color check input is valid email address (something@something.something) check input is valid web address (http://www.something.something) Clears everything on the page Select a colour american spelling
  • 27. • The value attribute specifies the initial value for an input field: value <form action=""> First name:<br> <input type="text" name="firstname" value="John"> <br> Last name:<br> <input type="text" name="lastname"> </form>
  • 28. • The readonly attribute specifies that the input field is read only (cannot be changed) read only <form action=""> First name:<br> <input type="text" name="firstname" value="John" readonly> <br> Last name:<br> <input type="text" name="lastname"> </form>
  • 29. • The disabled attribute specifies that the input field is disabled. • A disabled element is un-usable and un-clickable. • Disabled elements will not be submitted Disabled <form action=""> First name:<br> <input type="text" name="firstname" value="John" disabled> <br> Last name:<br> <input type="text" name="lastname"> </form>
  • 30. • The size attribute specifies the size (in characters) for the input field size <form action=""> First name:<br> <input type="text" name="firstname" value="John" size="40"> <br> Last name:<br> <input type="text" name="lastname"> </form>
  • 31. • The maxlength attribute specifies the maximum allowed length for the input field: maxlength <form action=""> First name:<br> <input type="text" name="firstname" maxlength="10"> <br> Last name:<br> <input type="text" name="lastname"> </form>
  • 32. • The autocomplete attribute specifies whether a form or input field should have autocomplete on or off autocomplete <form autocomplete="on"> First name:<input type="text" name="fname"><br> Last name: <input type="text" name="lname"><br> E-mail: <input type="email" name="email" autocomplete="off"><br> <input type="submit"> </form>
  • 33. placeholder • The placeholder attribute specifies a hint that describes the expected value of an input field (a sample value or a short description of the format). <input type="text" name="fname" placeholder="First name">
  • 34. required • When present, it specifies that an input field must be filled out before submitting the form. • The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file. Username: <input type="text" name="username" required> This one is important
  • 36. form security • Forms can be quite insecure when we are using them, we need to make sure that the right data is being seen by the right people • and that no-one can get access to the really sensitive data! For example…here’s how to find our a password on an unsecured computer PS - DON’T DO THIS ONE SOMEONE ELSES COMPUTER - YOU’ll GET INTO A LOT OF TROUBLE!!
  • 37. I’ve visited a website and have put in my username and password into the box provided. Let’s say that now I have to step away from my computer for 5 seconds…
  • 38. Some unsavoury character comes along and looks at my screen. They right click on the password field and then go to inspect, I wonder what they are up to?
  • 39. Now they are looking at the HTML for this web page and have an interest in the field that my password is in. It’s ok…its secure (it really isn’t).
  • 40. They change the form element from: <input type=“Password”> to <Input Type=“text”> and now my password is being shown to the world #awkward!
  • 41. • HTML Forms • Form Presentation • Form Elements • Input Types • Input Attributes • Form Security Recap
  • 42. get in touch! @mike_crabb Lecturer in Web Development at Robert Gordon University (Scotland) @rgucomputing Robert Gordon University - School of Computing Science and Digital Media