javascript动态树形结构的实现

本文介绍了一种使用HTML和JavaScript构建动态树形结构的方法。通过递归地创建带有特定层级缩进的节点,实现了树状数据的可视化展示。此外,还提供了节点展开与折叠的功能,增强了用户体验。

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 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

        <title>Untitled Document</title>

        <script type="text/javascript">

            function all(){

                node('d1', 'd0', '111');

                node('d2', 'd1', 'aaa');

                node('d3', 'd2', 'bbb');

                node('d4', 'd1', 'ccc');

                node('d5', 'd1', 'ddd');

                node('d6', 'd4', 'eee');
 
               node('d7', 'd3', 'fff');
 
               node('d8', 'd0', '222');
 
           }

           

            function node(id, pid, txt){

                var kong = ""

                var father = document.getElementById(pid);

                var child = document.createElement("div");

                child.id = id;

                for (var i = 0; i < father.age - 0; i++) {

                    kong = kong + "&nbsp;&nbsp;";

                }

                child.age = (father.age - 0 + 1);

                child.innerHTML = kong + txt;

                child.onclick = show;

                father.appendChild(child);
 
               if (pid != "d0") {

                    child.style.display = "none";

                }

            }

           

            function show(){

                window.event.cancelBubble = true;

                var parents = window.event.srcElement.id;

                var childs = document.getElementById(parents).childNodes;

                for (var i = 1; i < childs.length; i++) {

                    if (childs[i].style.display == "none")

                        childs[i].style.display = "block";

                    else

                        childs[i].style.display = "none";

                }

            }

        </script>

    </head>

    <body onload="all()">

        <div id="d0" age="0">

        </div>

    </body>

</html>

 

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