This chapter describes all the different HTML form elements.
The HTML <form> element can contain one or more of the following form elements:
<form>
<input>
<label>
<select>
<textarea>
<button>
<fieldset>
<legend>
<datalist>
<output>
<option>
<optgroup>
One of the most used form elements is the <input> element.
The <input> element can be displayed in several ways, depending on the type attribute.
type
<label for="fname">First name:</label> <input type="text" id="fname" name="fname">
All the different values of the type attribute are covered in the next chapter: HTML Input Types.
The <label> element defines a label for several form elements.
The <label> element is useful for screen-reader users, because the screen-reader will read out loud the label when the user focus on the input element.
The <label> element also help users who have difficulty clicking on very small regions (such as radio buttons or checkboxes) - because when the user clicks the text within the <label> element, it toggles the radio button/checkbox.
The for attribute of the <label> tag should be equal to the id attribute of the <input> element to bind them together.
for
id
The <select> element defines a drop-down list:
<label for="cars">Choose a car:</label> <select id="cars" name="cars"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="fiat">Fiat</option> <option value="audi">Audi</option> </select>
The <option> element defines an option that can be selected.
By default, the first item in the drop-down list is selected.
To define a pre-selected option, add the selected attribute to the option:
selected
<option value="fiat" selected>Fiat</option>
Use the size attribute to specify the number of visible values:
size
<label for="cars">Choose a car:</label> <select id="cars" name="cars" size="3"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="fiat">Fiat</option> <option value="audi">Audi</option> </select>
Use the multiple attribute to allow the user to select more than one value:
multiple
<label for="cars">Choose a car:</label> <select id="cars" name="cars" size="4" multiple> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="fiat">Fiat</option> <option value="audi">Audi</option> </select>
