HTML DOM defaultSelected Property
 Complete Option Object Reference
Definition and Usage
The defaultSelected property returns the default value of the selected
attribute.
This property returns true if an option is selected by default, otherwise it
returns false.
Note: If an option is default selected , it will be displayed first in
the list.
Syntax
optionObject.defaultSelected
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Example
The following example alerts if the chosen fruit is selected by default:
<html>
<head>
<script type="text/javascript">
function alertDefaultSelected()
{
var x=document.getElementById("mySelect").selectedIndex;
var y=document.getElementsByTagName("option");
var txt="Is " + y[x].text + " selected by default? ";
txt=txt + y[x].defaultSelected;
alert(txt);
}
</script>
</head>
<body>
<form>
Select your favorite fruit:
<select id="mySelect">
<option>Apple</option>
<option>Orange</option>
<option selected="selected">Pineapple</option>
<option>Banana</option>
</select>
<br />
<br />
<input type="button" onclick="alertDefaultSelected()"
value="Is the chosen fruit selected by default?">
</form>
</body>
</html>
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Try-It-Yourself Demos
Check if an option is selected by default
Complete Option Object Reference
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