如何使用jquery显示选定的选项值？

Question

I was able to append values in an array to the select option. When I do that I am not able to see the text value(A1) in the selection box. But when I use an alert box it shows A1 as the selected option.

My jQUERY CODE:

var route=['A1','A2','A3','A4','A5','A6','A7',......,'A50']
$.each(route, function(key, value) {
 $('#room').append($('<option>', { value : key }).text(value)); 

if (!$("#room option:selected").length)
$("#room option[value='0']").attr('selected', 'selected'); 

This is my html code:

<div data-role="fieldcontain"> 
<select name="room" id="room">  
</select>          
</div>

Can anyone help me on this one?

Answer 1

Try this instead

var route=['A1','A2','A3','A4','A5','A6','A7','A50'], html;
$.each(route, function(key, value) {
  html += '<option value="'+key+'">'+value+'</option>';
});
$('#room').append(html);

if ($("#room").val() !== '0') {
  $("#room").val(0); // using .val() will select the correct option for you, based on it's value attribute
} ​

see: http://jsfiddle.net/tyPFu/