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如何在一个容器div中平均分配空间给两个具有可切换可见性和不同内容的div?

<p>我有一个包含4个div的div容器。其中有2个标题和2个内容div。点击标题将切换它们下方内容div的可见性。</p> <p>我想考虑以下3种情况:</p> <ol> <li>两个内容div都是打开的(可见的),并且有滚动条。在这种情况下,我希望它们都占据可用空间的一半。</li> <li>1个内容div是打开的,有或没有滚动条。在这种情况下,我希望它占据所有可用空间或它所需的空间。</li> <li>两个内容div都是关闭的。在这种情况下,我希望标题div位于容器顶部。</li> </ol> <h3>已实现的功能</h3> <ul> <li>如果两个div都有滚动条并且是打开的,可用空间将均匀分配。</li> <li>如果一个关闭,另一个将填充可用空间。如果两个都关闭,只有标题将显示。</li> </ul> <h3>未实现的功能</h3> <ul> <li>当底部内容div关闭且顶部内容div有滚动条时,顶部内容div的高度将只增长到容器高度的一半。</li> <li>当两个内容div都打开且没有滚动条时,它们将增长到容器高度的50%,并在内容div和下方的标题div之间创建空白间隔。</li> </ul> <p>这是HTML的结构</p> <pre class="brush:php;toolbar:false;"><div class='flex-container'> <div id='header1' class='header'> Header 1 </div> <div id='content1' class='header-content'> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> <div class='item'>Lorem</div> </div> <div id='header2' class='header'> Header 2 </div> <div id='content2' class='header-content'> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> <div class='item'>Ipsum</div> </div> </div></pre> <p>这是我尝试应用的样式。请注意,我使用的是Sass。</p> <pre class="brush:php;toolbar:false;">.flex-container { display: flex; flex-direction: column; height: 300px; width: 150px; overflow-y: auto; } .header { display: flex; align-items: center; min-height: 35px; background-color: #99e9f2; cursor: pointer; } .header-content { flex-basis: calc(50% - 35px); flex-grow: 1; overflow-y: auto; display: flex; flex-direction: column; .item { padding: 3px 12px; background-color: #e3fafc; } }</pre> <p>这是代码pen的链接。</p> <h3>我尝试过的事情</h3> <ul> <li>我还尝试使用<code>max-heigth: calc(50% - 35px)</code>(标题高度为35px),这解决了增长的内容div导致出现空白间隔的问题,但这也使得如果另一个内容div关闭,内容div将不会增长超过该高度。</li> <li>仅使用<code>flex-grow: 1</code>而不使用<code>flex-basis: calc(50% - 35px)</code>和<code>max-height: calc(50% - 35px)</code>可以使内容div增长超过容器高度的约50%,但如果一个内容div具有更多元素,会导致内容div的高度不均匀,从而导致可用空间不均匀分配。</li> </ul><p><br /></p>
P粉289775043P粉289775043407 天前547

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  • P粉364129744

    P粉3641297442023-08-18 10:40:53

    这样就可以实现你想要做的事情。你可以根据需要进行修改:

    <!DOCTYPE html>
    <html lang="en-us">
    <head>
        <title>Variable Percentage Height</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <style>
            *,
            *::before
            *::after {
                margin: 0;
                border: 0;
                padding: 0;
                box-sizing: border-box;
                color: inherit;
                font-family: inherit;
                font-size: inherit;
                text-align: justify;
            }
    
            html, body {
                height: 100%;
            }
    
            body {
                font-size: 14px;
            }
    
            body {
                color: #000000;
                font-family: 'Segoe UI', 'Lucida Grande', -apple-system, BlinkMacSystemFont, 'Liberation Sans', sans-serif;
            }
        </style>
        <style>
            #container {
                height: 100%;
            }
    
            .content {
                overflow: auto;
                background-color: #eec1ff;
                position: relative;
            }
    
            .content::after {
                position: absolute;
                inset: auto 0 0 0;
                display: block;
                z-index: 1;
                text-align: center;
            }
    
            #content1::after {
                content: 'this is the bottom of content div #1';
            }
    
            #content2::after {
                content: 'this is the bottom of content div #2';
            }
    
            .header {
                height: 35px;
                line-height: 35px;
                background-color: #99e9f2;
                cursor: pointer;
            }
    
            .item {
                padding: 3px 12px;
                background-color: #e3fafc;
                position: relative;
                z-index: 2;
            }
        </style>
    </head>
    <body>
    <div id="container">
        <div class="header" id="header1">Header 1</div>
        <div class="content" id="content1">
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
            <div class="item">Lorem</div>
        </div>
        <div class="header" id="header2">Header 2</div>
        <div class="content" id="content2">
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
            <div class="item">Ipsum</div>
        </div>
        <script>
            (() => {
                const header1 = document.getElementById("header1");
                const header2 = document.getElementById("header2");
                const content1 = document.getElementById("content1");
                const content2 = document.getElementById("content2");
                let header1open = false;
                let header2open = false;
                header1.onclick = updateHeights;
                header2.onclick = updateHeights;
                updateHeights(null);
    
                /**
                 * @param {MouseEvent} e
                 */
                function updateHeights(e) {
                    const headerTotalHeight = header1.offsetHeight + header2.offsetHeight;
                    if (e == null) {
                        content1.style.display = "none";
                        content2.style.display = "none";
                        header1open = false;
                        header2open = false;
                    } else if (header1.contains(e.target)) {
                        if (header1open) {
                            header1open = false;
                            content1.style.display = "none";
                            if (header2open) {
                                content2.style.height = `calc(100% - ${headerTotalHeight}px)`;
                            }
                        } else {
                            header1open = true;
                            content1.style.removeProperty("display");
                            if (header2open) {
                                content1.style.height = `calc((100% - ${headerTotalHeight}px) / 2)`;
                                content2.style.height = `calc((100% - ${headerTotalHeight}px) / 2)`;
                            } else {
                                content1.style.height = `calc(100% - ${headerTotalHeight}px)`;
                            }
                        }
                    } else if (header2.contains(e.target)) {
                        if (header2open) {
                            header2open = false;
                            content2.style.display = "none";
                            if (header1open) {
                                content1.style.height = `calc(100% - ${headerTotalHeight}px)`;
                            }
                        } else {
                            header2open = true;
                            content2.style.removeProperty("display");
                            if (header1open) {
                                content1.style.height = `calc((100% - ${headerTotalHeight}px) / 2)`;
                                content2.style.height = `calc((100% - ${headerTotalHeight}px) / 2)`;
                            } else {
                                content2.style.height = `calc(100% - ${headerTotalHeight}px)`;
                            }
                        }
                    }
                }
            })();
        </script>
    </div>
    </body>
    </html>

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