Introduction
The select tag is more often used to collect the input from the user where the input should be from some particular list or options.
The syntax for <select> tag is as follows
<select>
<option>Item1</option>
<option>Item2</option>
<option>Item3</option>
</select>
Output :
<select> tag with <optgroup>
optgroup is used to define the groups between the list of options displayed in the <select> tag.
The syntax for <select> tag with <optgroup>
<select>
<optgroup label="Airbus">
<option>320</option>
<option>330</option>
<option>380</option>
</optgroup>
<optgroup label="Boeing">
<option>747</option>
<option>777</option>
<option>737</option>
</optgroup>
</select>
Output :
To provide some particular value we provide value attribute to the <option> tag as shown below
<option value="747">Boeing 747</option>