JavaScript Reference/Javascript Properties/label

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"label" Example

   <source lang="javascript">

<html> <body> <form name="form2" method="post" action=""> <select name="select1"> <optgroup id="optg1"> 

   <option id="opt1_1">first</option>
   <option>second</option>
   <option>third</option>

</optgroup> <optgroup id="optg2"> 

   <option>first item in second group </option>
   <option id="opt2_2">second item in second group </option>
   <option>third item in second group </option>

</optgroup> <script language="JavaScript"> 

   document.getElementById("optg1").label = "first group";
   document.getElementById("optg2").label = "second group";

</script> </select> </form> </body> </html> 


     </source>


"label" is applied to

   <source lang="javascript">

+----------------+--------------------------------------------------------------+ | Applied_To |<option> | +----------------+--------------------------------------------------------------+ 

     </source>


"label" Syntax and Note

   <source lang="javascript">

Note: Read and write property. For the <optgroup>, helps group list items in a <select> element. For the <option>, used to record additional information regarding 

                           the element.

Syntax:

document.getElementById("elementID").label = value document.all.elementID.label = value // IE only 


     </source>
Источник — «http://wbex.ru/index.php?title=JavaScript_Reference/Javascript_Properties/label&oldid=7009»