jQuery 如何在jQuery中选择id下的子元素
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How to select child elements under id in jQuery
提问by kvu787
Sample code:
示例代码：
<div id='container'>
<h1>heading 1</h1>
<h2>heading 2</h2>
<p>paragraph</p>
</div>
I would like a jQuery equivalent of this CSS selector to select the h1element under the div:
我想要一个与此 CSS 选择器等效的 jQuery 来选择以下h1元素div：
#container h1 {}
回答by David says reinstate Monica
You can simply implement the exact same selector:
您可以简单地实现完全相同的选择器：
$('#container h1')
Which selects every h1element found within the #containerelement, or:
它选择h1在元素中找到的每个#container元素，或者：
$('#container > h1')
Which selects only those h1elements that have the #containerelement as their parent (notgrandparent, or other form of ancestor).
它只选择那些h1将#container元素作为其父元素（不是祖父元素或其他形式的祖先元素）的元素。
Or, if you prefer:
或者，如果您更喜欢：
$('#container').find('h1')
You could also restrict it to a particular h1element:
您还可以将其限制为特定h1元素：
$('#container h1:first')
Which selects only the firsth1element within the #containerelement.
它只选择元素中的第一个元素。h1#container
References:
参考：
