Jquery - 通过 id 设置选择列表选项
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Jquery - Setting a select list option by id
提问by SethPlante
I feel like this should not be this complicated, but I'm sure I'm missing something trivial. Thanks for anyone that can help!
我觉得这不应该这么复杂，但我确定我错过了一些微不足道的东西。感谢任何可以提供帮助的人！
XSL:
XSL：
<select id="mySelectList">
<option id="1" description="Blue" />
<option id="2" description="Black" />
<option id="3" description="Green" />
</select>
JS:
JS：
$("#mySelectList option[id='1']").attr("selected", "selected");
EDIT: Fixed my select per Nick's response.
编辑：根据尼克的回应修正了我的选择。
回答by Nick Craver
A <select>should look like:
A<select>应该如下所示：
<select id="mySelectList">
Or if you literally want the element and that's XML, remove the #for an element selector, like this:
或者，如果您确实想要该元素并且是 XML，请删除#for an element selector，如下所示：
$("mySelectList option[id='1']").attr("selected", "selected");
回答by Gnp
Your code should select what you want.
您的代码应该选择您想要的。
Are you sure that you want your <option>to be without a text value ?
您确定要<option>没有文本值吗？
Maybe you want
也许你想要
<select id="mySelectList">
<option id="1" description="Blue">Blue</option>
<option id="2" description="Black">Black</option>
<option id="3" description="Green">Green</option>
</select>
Also keep in mind that you select the first item, which is selected by default.
还要记住，您选择了默认情况下选中的第一项。
example at http://www.jsfiddle.net/Zfx3e/
回答by lonesomeday
In HTML4, ID attributes must begin with a letter, not a number (see the specifications). E.g.
在 HTML4 中，ID 属性必须以字母开头，而不是数字（请参阅规范）。例如
<select id="mySelectList">
<option id="opt1" description="Blue" />
<option id="opt2" description="Black" />
<option id="opt3" description="Green" />
</select>
So you could do
所以你可以这样做
$('#mySelectList option[id="opt1"]);
