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How to implement concatenated addback() and end() in jquery (code)

不言Original: 2018-08-13 17:14:451569browse

The content of this article is about how to connect addback() and end() (code) in jquery. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

<!DOCTYPE html><html lang="en"><head>
    <meta charset="UTF-8">
    <title>串联addback()和end()</title>

    <script type="text/javascript" src="../js/jquery-3.3.1.min.js"></script>
    <script type="text/javascript">
        $(function(){
            // $("div").find("p").css("border","1px solid red");
            //div下查找p,addBack()回溯找到div,.css()对两者同时添加样式
            // $("div").find("p").addBack().css("border","1px solid red");
            // 注意:对于筛选或查找后的元素,要加入先前所选元素时,使用addBack()方法会很有效,符合链式设计原则

            //返回jQuery对象,为p元素添加边框,同时为div添加背景
            $("div").find("p").css("border","1px solid red").end().css("background","#ff0");


        });    </script></head><body>
    <div>
        <p>天将降大任于斯人也</p>
        <p>必先劳其筋骨,苦其心志,空乏其身</p>
    </div></body></html>

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