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jQuery node traverses next, prev, siblings - ipangjie

巴扎黑Original: 2017-06-22 13:10:563308browse

jquery, when we want to get the adjacent elements of an element, there are three commands that can be used:

next(): used to get The next sibling element.

prev(): used to get the previous sibling element.

siblings(): Used to obtain all sibling elements.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>jQuery中的节点遍历next下一个、prev上一个、siblings兄弟</title>

    <script src="js/jquery-1.4.2.js" type="text/javascript"></script>

    <script type="text/javascript">
        $(function() {            //next()方法用于获取节点之后的 挨着 的第一个同辈元素            //参数为空显示挨着 的第一个同辈元素    参数不为空就行匹配，如是参数元素显示，如不是显示空            //$(this).next("p").text()    点击aaaa返回弹出空  点击cccc显示dddd
            $("p").click(function() {
                alert($(this).next("p").text());
            });            //nextAll()nextAll()方法用于获取节点之后的所有同辈元素            //参数为空显示所有同辈元素的值    参数不为空就匹配，如是参数元素显示，如不是显示空            //$(this).nextAll().text() 点击aaaa返回弹出bbbbccccdddd  点击cccc显示dddd            //$(this).nextAll("p").text()    点击aaaa返回弹出ccccdddd  点击cccc显示dddd
            $("p").click(function() {
                alert($(this).nextAll("p").text());
            });            //prev、prevAll兄弟中之前的元素。    与next、nextAll相反
            $("p,p").click(function() {
                alert($(this).prev().text());
                alert($(this).prevAll().text());
                alert($(this).prev("p").text());
                alert($(this).prevAll("p").text());
            });            //siblings()方法用于获取所有同辈元素
            $("p,p").click(function() {
                alert($(this).siblings().text());
                alert($(this).siblings("p").text());
            });
        })        //案例：选中的p变色 $(this).css();$(this).siblings().css()        //案例：评分控件。prevAll,this,nextAll
    </script>

</head>
<body>
    <p>
        aaaa</p>
    <p>
        bbbb</p>
    <p>
        cccc</p>
    <p>
        dddd</p>
</body>
</html>

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