Using the selectedIndex Property : select option « Form « JavaScript Tutorial

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JavaScript Tutorial » Form » select option 
10.13.6.Using the selectedIndex Property
<html

<head> 
<title>Select Inspector</title> 
<script type="text/javascript"
function inspect(form) { 
    alert(form.colorsList.options[form.colorsList.selectedIndex].text)

</script> 
</head> 
<body
<form
<select name="colorsList"
<option selected="selected">Red</option> 
<option value="Plants">Green</option> 
<option>Blue</option> 
</select>
<input type="button" value="Show Selection" onclick="inspect(this.form)" />
</form
</body
</html>
10.13.select option
10.13.1.Find the selected option
10.13.2.Click button to navigate a selection in form option (combox)
10.13.3.Use the Option (combox) onChange event to navigate
10.13.4.Using the options[index].text Property
10.13.5.Using the options[index].value Property
10.13.6.Using the selectedIndex Property
10.13.7.Modifying optgroup Element Labels
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