HTML-Forms
- 1. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Chapter 2 Part III HTML Topic Forms ***************************************************************** I. Form: are required when you want to collect some data from the web. For example during user registration you would like to collect information such as name, email address, credit card, etc. and submit it to an application such as PHP. HTML FormControls There are different types of form controls that you can use to collect data using HTML form: Text Input Controls Checkboxes Controls Radio Box Controls Select Box Controls File Select boxes Hidden Controls Clickable Buttons Submit and Reset Button a. Text Input Controls There are three types of text input used on forms:
- 2. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Single-line text input controls - This control is used for items that require only one line of user input, such as search boxes or names. They are created using HTML <input> tag. Password input controls - This is also a single-line text input but it masks the character as soon as a user enters it. They are also created using HTMl <input> tag. Multi-line text input controls - This is used when the user is required to give details that may be longer than a single sentence. Multi-line input controls are created using HTML <textarea> tag. Attributes Following is the list of attributes for <input> tag for creating password field. Attribute Description Type Indicates the type of input control and for password input control it will be set to password. Name Used to give a name to the control which is sent to the server to be recognized and get the value. Value This can be used to provide an initial value inside the control. Size Allows to specify the width of the text-input control in terms of characters. Maxlength Allows to specify the maximum number of characters a user can enter into the text box. Single-line text input controls This control is used for items that require only one line of user input, such as search boxes or names. They are created using HTML <input> tag. Example: <html> <head>
- 3. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, <title>Text Input Control</title> </head> <body> <form > First name: <input type="text" name="first_name" /> <br> Last name: <input type="text" name="last_name" /> </form> </body> </html> Password input controls This is also a single-line text input but it masks the character as soon as a user enters it. They are also created using HTML <input> tag but type attribute is set to password. Example: <html> <head> <title>Password Input Control</title> </head> <body> <form > User ID : <input type="text" name="user_id" /> <br> Password: <input type="password" name="password" /> </form>
- 4. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, </body> </html> Multiple-Line TextInput Controls This is used when the user is required to give details that may be longer than a single sentence. Multi-line input controls are created using HTML <textarea> tag. Example: <html> <head> <title>Multiple-Line Input Control</title> </head> <body> <form> Description : <br /> <textarea rows="5" cols="50" name="description"> Enter description here... </textarea> </form> </body> </html> Attributes Following is the list of attributes for <textarea> tag.
- 5. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, AttributeDescription Name Used to give a name to the control which is sent to the server to be recognized and get the value. Rows Indicates the number of rows of text area box. Cols Indicates the number of columns of text area box b. Checkbox Control Checkboxes are used when more than one option is required to be selected. They are also created using HTML <input> tag but type attribute is set to checkbox. <html> <head> <title>Checkbox Control</title> </head> <body> <form> <input type="checkbox" name="maths" value="on"> Maths <input type="checkbox" name="physics" value="on"> Physics </form> </body> </html> Attributes Following is the list of attributes for <checkbox> tag.
- 6. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Attribute Description Type Indicates the type of input control and for checkbox input control it will be set to checkbox. Name Used to give a name to the control which is sent to the server to be recognized and get the value. Value The value that will be used if the checkbox is selected. Checked Set to checked if you want to select it by default. c. Radio Button Control Radio buttons are used when out of many options, just one option is required to be selected. They are also created using HTML <input> tag but type attribute is set to radio. Example: <html> <head> <title>Radio Box Control</title> </head> <body> <form> <input type="radio" name="subject" value="maths"> Maths <input type="radio" name="subject" value="physics"> Physics </form> </body> </html>
- 7. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Attributes Following is the list of attributes for radio button. Attribute Description Type Indicates the type of input control and for checkbox input control it will be set to radio. Name Used to give a name to the control which is sent to the server to be recognized and get the value. Value The value that will be used if the radio box is selected. Checked Set to checked if you want to select it by default. d. Select Box Control A select box, also called drop down box which provides option to list down various options in the form of drop down list, from where a user can select one or more options. Example: <html> <head> <title>Select Box Control</title> </head> <body> <form> <select name="dropdown"> <option value="Maths" selected>Maths</option> <option value="Physics">Physics</option>
- 8. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, </select> </form> </body> </html> Attributes Following is the list of important attributes of <select> tag: Attribute Description Name Used to give a name to the control which is sent to the server to be recognized and get the value. Size This can be used to present a scrolling list box. Multiple If set to "multiple" then allows a user to select multiple items from the menu. Following is the list of important attributes of <option> tag: Attribute Description Value The value that will be used if an option in the select box box is selected. Selected Specifies that this option should be the initially selected value when the page loads. Label An alternative way of labeling options e. File Upload Box If you want to allow a user to upload a file to your web site, you will need to use a file upload box, also known as a file select box. This is also created using the <input> element but type attribute is set to file.
- 9. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Example: <html> <head> <title>File Upload Box</title> </head> <body> <form> <input type="file" name="fileupload" accept="image/*" /> </form> </body> </html> Attributes Following is the list of important attributes of file upload box: Attribute Description Name Used to give a name to the control which is sent to the server to be recognized and get the value. Accept Specifies the types of files that the server accepts. f. Button Controls There are various ways in HTML to create clickable buttons. You can also create a clickable button using <input> tag by setting its type attribute to button. The type attribute can take the following values:
- 10. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, Submit: This creates a button that automatically submits a form. Reset: This creates a button that automatically resets form controls to their initial values. Button: This creates a button that is used to trigger a client-side script when the user clicks that button. Image: This creates a clickable button but we can use an image as background of the button. Example: <html> <head> <title>File Upload Box</title> </head> <body> <form> <input type="submit" name="submit" value="Submit" /> <input type="reset" name="reset" value="Reset" /> <input type="button" name="ok" value="OK" /> <input type="image" name="imagebutton" src="/html/images/logo.png" /> </form> </body> </html>
- 11. Subject: Web Design and Programming Lecturer: Ahmed Ali Saihood Thi-Qar University, Collage of Computer sciences and Mathematics, g. Hidden Form Controls Hidden form controls are used to hide data inside the page which later on can be pushed to the server. This control hides inside the code and does not appear on the actual page. For example, following hidden form is being used to keep current page number. When a user will click next page then the value of hidden control will be sent to the web server and there it will decide which page has be displayed next based on the passed current page. <html> <head> <title>File Upload Box</title> </head> <body> <form> <p>This is page 10</p> <input type="hidden" name="pagename" value="10" /> <input type="submit" name="submit" value="Submit" /> <input type="reset" name="reset" value="Reset" /> </form> </body> </html>Example: