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Forms
A form is defined with the <form> tag.
<form>
<input>
<input>
</form>
Input
Text Fields
Text fields are used when you want the user to type letters, numbers, etc. in a form.
<form>
First name:
<input type="text" name="firstname">
<br>
Last name:
<input type="text" name="lastname">
</form>
How it looks in a browser:
Note that the form itself is not visible. Also note that in most browsers, the width of the text field is 20 characters by default.
Radio Buttons
Radio Buttons are used when you want the user to select one of a limited number of choices.
<form>
<input type="radio" name="sex" value="male"> Male
<br>
<input type="radio" name="sex" value="female"> Female
</form>
How it looks in a browser:
Note that only one option can be chosen
Checkboxes
Checkboxes are used when you want the user to select one or more options of a limited number of choices.
<form>
I have a bike:
<input type="checkbox" name="vehicle" value="Bike">
<br>
I have a car:
<input type="checkbox" name="vehicle" value="Car">
<br>
I have an airplane:
<input type="checkbox" name="vehicle" value="Airplane">
</form>
How it looks in a browser:
The Form's Action Attribute and the Submit Button
When the user clicks on the "Submit" button, the content of the form is sent to the server. The form's action attribute defines the name of the file to send the content to. The file defined in the action attribute usually does something with the received input.
<form name="input" action="html_form_submit.asp"
method="get">
Username:
<input type="text" name="user">
<input type="submit" value="Submit">
</form>
How it looks in a browser:
Textarea
<html>
<body>
<textarea rows="10" cols="30">
The cat was playing in the garden.
</textarea>
</body>
</html>
Window Events
Only valid in body and frameset elements
Form Element Events
Only valid in form elements.
Keyboard Events
Not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.
Mouse Events
Not valid in base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, title elements.
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