How to get type of input object [duplicate]

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Possible Duplicate:

How do I determine an HTML input element type upon an event using jQuery?

I want to get type of input object but I alway got "undefined".

What is missing it this code?

var c = $("input[name=\'lastName\']");
c.val("test");
alert(c.type);

My form

<form action="formAction.jsp" method="post">
    FirstName <input type="text" name="firstName" id="firstName"></input><br/>
    LastName <input type="text" name="lastName"></input><br/>
    Address <input type="text" name="address"></input><br/>
    Tel <input type="text" name="tel"></input><br/>
    Email <input type="text" name="email"></input><br/>
</form>

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$(c).attr('type')

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jQuery does not return an ordinary element object, which has its attributes as properties. It returns a jQuery wrapper; you can access its attributes using attr(), so what you want is:

alert(c.attr('type'));

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Change this:

 var c = $("input[name=\'lastName\']");

To:

 var c = $("input[name='lastName']");
 alert(c.type);

...

Alternatively:

 alert($(c).attr('type'));

---

since you're using jQuery, you can do this:

$( 'input[name="lastName"]' ).attr( 'type' );//returns text