css+js实现下拉二级可折叠选择框效果代码-html代码-BFW代码库

css+js实现下拉二级可折叠选择框效果代码

代码语言：html

代码描述：css+js实现下拉二级可折叠选择框效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>下拉树形选择器</title>
<style>
    .tree-select {
    position: relative;
    width: 300px;
    font-family: Arial,sans-serif
}

.select-header {
    padding: 8px;
    border: 1px solid #ccc;
    cursor: pointer;
    background-color: #fff;
    border-radius: 4px
}

.select-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    border: 1px solid #ccc;
    background-color: #fff;
    max-height: 200px;
    overflow-y: auto;
    margin-top: 4px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1000
}

.tree-node {
    list-style: none;
    padding-left: 20px
}

.node-item {
    padding: 6px 8px;
    cursor: pointer;
    display: flex;
    align-items: center
}

.node-item:hover {
    background-color: #f0f0f0
}

.node-item.selected .........完整代码请登录后点击上方下载按钮下载查看