enable input fields if radio buttons is checked with jquery

Question

I have this radio buttons in html code:

<span><input type="radio" value="false" name="item[shipping]" id="item_shipping_false" checked="checked"><label for="item_shipping_false" class="collection_radio_buttons">No</label></span>

<span><input type="radio" value="true" name="item[shipping]" id="item_shipping_true"><label for="item_shipping_true" class="collection_radio_buttons">Yes</label></span>

and I have 1 disabled field like:

<input id="item_shipping_cost" class="currency optional" type="text" size="30" name="item[shipping_cost]" disabled="disabled">

I want that if an user click in option Yes in radio buttons, remove the html attributedisabled="disabled" to this last input field, and if user click in option No in radio buttons add the attributedisabled="disabled" to this last input field

How can I do it with jquery?

thank you!

Answer 1

you can use removeAttr

   $('#item_shipping_true').click(function()
{
  $('#item_shipping_cost').removeAttr("disabled");
});

$('#item_shipping_false').click(function()
{
  $('#item_shipping_cost').attr("disabled","disabled");
});

see demo in JsFiddle