How to set a drop-down list to a specific value

Question

If I have valvo that get from the database, How to set the status of the volvo option to active (marked) using jQuery?

<select name="car">
      <option value="volvo">Volvo</option>
      <option value="saab">Saab</option>
      <option value="mercedes">Mercedes</option>
      <option value="audi">Audi</option>
</select>

I do not know how to manage a manager with the same identity.
??? $('input[name="car"]').attr('checked', true);

Answer 1

Since your example is a dropdown, you should use val ()

$("select[name='car']").val('volvo');

If you want to use the radio button, you can use

$(":radio[value='volvo']").attr ( "checked" , true );

for the next HTML

<input type="radio" value="volvo" />
<input type="radio" value="saab" />
<input type="radio" value="mercedes" />
<input type="radio" value="audi" />

Answer 2

This also works:

$("select[name=car]").val('volvo');

Answer 3

$('select[name="car"]').val("volvo");

, 'checked'. , , option, selected:

$('select[name="car"]').attr("selected", "selected");

Answer 4

Does jQuery support multiple CSS attribute selectors? If so, this should work:

$('input[name=car][value=volvo]').attr('checked', true);

Otherwise, you can always scroll through all available switches, check their value and check them when the value matches.

Answer 5

This should work for the switches as stated in the original question.

$('input[name=car]:radio').attr('checked','checked');

This should work for selection.

$('select[name=car]').val('volvo');