jQuery last() 方法
定义和用法
last() 方法返回选定元素中的最后一个元素。
提示：要返回第一个元素，请使用 first() 方法。
语法
$(选择器).last()
亲自试一试 - 实例
在一组 <p> 元素中选择最后一个 <span> 元素
如何在一组 <p> 元素中选择最后一个 <span> 元素。
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