我正在尝试 .Find() 一个 Div 内的 TextArea

Question

 <div id='bla'>
   <textarea type='text' style='text-align:center; color:black; width:90px; border:1px     
    solid transparent; font-size:11px; margin:2px'>this is a test</textarea>
 </div>​​​​​​​​​​​​

 alert($('bla').find('textarea').css('border'))

but for some reason this returns 'undefined' any ideas why? I'm defining a border inside that style... :/

jsfiddle: http://jsfiddle.net/foreyez/yWgqD/

Answer 1

Missed the ID selector ( # ) before bla ...

Instead, use the following:

alert($('#bla textarea').css('border'))

Answer 2

您需要使用# ID 选择器：

$("#bla").find("textarea").css("border");

Answer 3

The selector only won't cut it, you forgot the dom ready part too.

$(function() {
    alert($('#bla').find('textarea').css('border'));
});

http://jsfiddle.net/yWgqD/1/

Also as selector this is cleaner

$('#bla textarea')