HTML Element: <option>
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The HTML <option> element indicates an option
in a drop-down list.
The
attributes it
can take (other than HTML global
attributes and HTML
event attributes) include:
|
Attribute
|
Description
|
More
|
|
disabled
|
Specified element(s) (here
the option-group) to be disabled
|
Here
|
|
label
|
Title of option group
|
Here
|
|
selected
|
Indicates that an <option> element
should be pre-selected when the page loads
|
Here
|
|
value
|
Value of element
|
Here
|
To create or access such an element in JavaScript
see here. The
corresponding HTML DOM
object supports standard
DOM properties and methods, and additional properties with the same name and
meaning as the attributes of the underlying HTML element referred to above. It
also supports the following additional properties:
|
Property
|
Description
|
More
|
|
defaultSelected
|
Returns default value
of the selected attribute
|
Here
|
|
form
|
Returns reference to form that contains the option
|
Here
|
|
index
|
Sets
/ returns index position of option in drop-down list
|
Here
|
|
text
|
Sets / returns text of the option
|
Here
|
The default style
applicable to this element is shown here.
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head></head>
<body>
Created using HTML:<br>
<select size="5">
<optgroup label="Fruit">
<option value="fruit1">Apple</option>
<option value="fruit2">Banana</option>
</optgroup>
<option value="veg">Vegetables</option>
</select>
<br><br>Created using JavaScript:<br>
<span id="element"></span>
<script>
var x = document.createElement("SELECT")
var x1 = document.createElement("OPTGROUP");
var x1a = document.createElement("OPTION");
var x1b = document.createElement("OPTION");
var x2 = document.createElement("OPTION");
x1a.textContent = "Apple"; x1a.setAttribute("value","fruit1");
x1.appendChild(x1a);
x1b.textContent = "Banana"; x1b.setAttribute("value","fruit2");
x1.appendChild(x1b);
x1.setAttribute("label","Fruit");
x.appendChild(x1);
x2.textContent = "Vegetable"; x2.setAttribute("value","veg");
x.appendChild(x2);
x.setAttribute("size","5");
document.getElementById("element").appendChild(x);
</script>
</body>
</html>
|
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