find(选择器)方法可用于查找特定类型元素的所有后代元素。可以使用任何选择器语法编写选择器。
您可以尝试运行以下代码,以了解如何查找特定类型元素的所有后代元素:
<html> <head> <title>jQuery Example</title> <script src = "https://cdn.staticfile.org/jquery/2.1.3/jquery.min.js"></script> <script> $(document).ready(function() { $("p").find("span").addClass("selected"); }); </script> <style> .selected { color:blue; } </style> </head> <body> <p>This is first paragraph and <span>THIS IS BLUE</span></p> <p>This is second paragraph and <span>THIS IS ALSO BLUE</span></p> </body> </html>