jQuery：如何检查元素是否是最后一个兄弟元素？
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jQuery: how do I check if an element is the last sibling?
提问by Haroldo
How do I check if an element is the last sibling?
如何检查元素是否是最后一个兄弟元素？
For the last cell in a row I want to perform a different action.
对于一行中的最后一个单元格，我想执行不同的操作。
This doesn't work:
这不起作用：
$('td').each(function(){
var $this = $(this);
if ( $this === $this.parent().last('td') )
{
alert('123');
}
})
And neither does it if I remove .parent().
如果我删除.parent().
采纳答案by rahul
Try
尝试
$('tr td:last-child').each(function(){
var $this = $(this);
alert('123');
});
回答by bbeckford
This is more elegant and worked for me:
这更优雅，对我有用：
if($(this).is(':last-child'))
{
alert('123');
}
回答by ntziolis
Here you go, but that only make sense if you want to do something to the other tds as well other wise use the last-childmethod described in one of the other answers.
给你，但只有当你想对其他 tds 做一些事情时才有意义，否则明智地使用其他答案之一中描述的last-child方法。
$('td').each(function(){
var $this = $(this);
if ($this.index() == $this.siblings().length-1)
{
alert('123');
}
})
回答by legendJSLC
you can code this way.
你可以这样编码。
var $this = $(this);
if($this.index()==$this.siblings().size()-1)
{
alert("It's the last.");
}
回答by Caner SAYGIN
If you want to select multiple elements which are different tags with a common point, (for ex: all data-fooattribute defined tags like divs, inputs, text areas, etc.) you can follow this code:
如果要选择具有共同点的不同标签的多个元素（例如：所有data-foo属性定义的标签，如 div、输入、文本区域等），您可以遵循以下代码：
var elements = $("*[data-foo]");
elements.each(function (){
..
..your code
..
if (elements.index(this) == elements.length - 1) {
..you are at the end, do something else
}
})
