请勿破解
没有硬编码。这个想法不是解决一个案例,例如对于有 4 列的情况,但针对动态内容和响应式屏幕尺寸解决了这个问题。
我的问题是它基本上不是直接的 child ,而是它的内容
代码笔在这里:
https://codepen.io/anon/pen/OxzrzV
HTML
<h1>disclaimer: resize the window. Make the blue headers in a row match height</h1>
<div class="row mycontainer">
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">oh no this header wraps</div>
<div class="content">some content lala </div>
</div>
</div>
</div>
CSS
body{
padding: 20px;
}
.item{
height: 100%;
padding-right: 20px;
padding-top: 20px;
display: flex;
flex-direction: column
}
.header{
background-color: cornflowerblue;
}
.content{
background-color: salmon;
flex-grow: 1;
}
.mycontainer{
max-width: 500px;
}
我想要什么?
蓝色标题始终与当前行中的所有元素具有相同的大小。
可靠的 jquery 解决方案也很好......但它必须是万无一失的,并且也可以调整大小。 html结构的一般变化也很好。但必须响应正确。
所以这个(通过硬编码实现而不是响应):
最佳答案
基本上有两种方法可以实现,CSS 方式,
还有脚本方式,这里使用jQuery。
第一个脚本示例展示了如何为所有元素设置相同的高度。
第二个示例将每行的高度设置为相等,实现该方法的方法是检查元素的最高值(它会随着新行的变化而变化)并为每个处理过的范围/行设置高度。
我还添加了一些优化,预加载元素,因此如果只有 1 个元素或列,它不会处理它们。
堆栈片段 1
(function ($) {
// preload object array to gain performance
var $headers = $('.header')
// run at resize
$( window ).resize(function() {
$.fn.setHeaderHeight(0);
});
$.fn.setHeaderHeight = function(height) {
// reset to auto or else we can't check height
$($headers).css({ 'height': 'auto' });
// get highest value
$($headers).each(function(i, obj) {
height = Math.max(height, $(obj).outerHeight())
});
// set the height
$($headers).css({ 'height': height + 'px' });
}
// run at load
$.fn.setHeaderHeight(0);
}(jQuery));
body{
padding: 20px;
}
.item{
height: 100%;
padding-right: 20px;
padding-top: 20px;
display: flex;
flex-direction: column
}
.header{
background-color: cornflowerblue;
}
.content{
background-color: salmon;
flex-grow: 1;
}
.mycontainer{
max-width: 500px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.css" rel="stylesheet"/>
<div class="row mycontainer">
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">oh no this header wraps</div>
<div class="content">some content lala </div>
</div>
</div>
</div>
堆栈片段 2
(function ($) {
// preload object array to gain performance
var $headers = $('.header')
// only do this if there is more than 1 item
if ($headers.length < 2) { return; }
// run at resize
$( window ).resize(function() {
$.fn.setHeaderHeight(0,0);
});
$.fn.setHeaderHeight = function(height, idx) {
// reset to auto or else we can't check height
$($headers).css({ 'height': 'auto' });
$($headers).each(function(i, obj) {
// only continue if there is more than 1 column
if ($($headers).eq(0).offset().top !== $($headers).eq(1).offset().top ) {
return false;
}
// get highest value
height = Math.max(height, $(obj).outerHeight())
// did top value changed or are we at last item
if (i != 0 && $($headers).eq(i - 1).offset().top != $(obj).offset().top) {
// set height for row
$($headers).slice(idx, i).css({ 'height': height + 'px' });
// reset height and startIndex
height = 0;
idx = i;
} else if ($headers.length - 1 == i) {
// last row
$($headers).slice(idx, i + 1).css({ 'height': height + 'px' });
}
});
}
// run at load
$.fn.setHeaderHeight(0,0);
}(jQuery));
body{
padding: 20px;
}
.item{
height: 100%;
padding-right: 20px;
padding-top: 20px;
display: flex;
flex-direction: column
}
.header{
background-color: cornflowerblue;
}
.content{
background-color: salmon;
flex-grow: 1;
}
.mycontainer{
max-width: 500px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.css" rel="stylesheet"/>
<div class="row mycontainer">
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">oh no this header wraps</div>
<div class="content">some content lala </div>
</div>
</div>
</div>
由于有些人更喜欢普通的 javascript,我也更新了这样的示例(在所有元素上设置相同的高度),它使用计算的 height
值动态应用/添加类。
堆栈片段
(function(d,t,h) {
/* preload some variables */
h = (d.head || d.getElementsByTagName('head')[0]);
var items = d.querySelectorAll('.header');
function resized() {
var heights = [], i = 0, css;
/* delete set style so we get proper value */
removeElement('head_dynamic_css');
for (i = 0; i < items.length; i++) {
heights.push(parseFloat(window.getComputedStyle(items[i], null).getPropertyValue("height")));
}
css = ".header { height: " + Math.max.apply(null, heights) + "px; }";
/* create and add style with height */
var s = d.createElement('style');
s.type = 'text/css';
s.id = 'head_dynamic_css';
if (s.styleSheet) {
s.styleSheet.cssText = css
} else {
s.appendChild(d.createTextNode(css));
}
h.appendChild(s);
}
window.addEventListener("load", resized, false);
window.addEventListener("resize", resizer, false);
function resizer() {
if (!t) {
t = setTimeout(function() {
t = null;
resized();
}, 66);
}
}
function removeElement(el) {
var el = document.getElementById(el);
if (el) {
el.parentElement.removeChild(el);
}
}
}(document,null));
body {
padding: 20px;
}
.item {
height: 100%;
padding-right: 20px;
padding-top: 20px;
display: flex;
flex-direction: column
}
.header {
background-color: cornflowerblue;
}
.content {
background-color: salmon;
flex-grow: 1;
}
.mycontainer {
max-width: 500px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.css" rel="stylesheet"/>
<div class="row mycontainer">
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">bippo</div>
<div class="content">some content lala some content lala some content lala </div>
</div>
</div>
<div class="col-12 col-md-4 col-lg-3">
<div class="item">
<div class="header">oh no this header wraps</div>
<div class="content">some content lala </div>
</div>
</div>
</div>
关于jquery - 如何从卡片或类似的东西中获取标题以与 flexbox 具有相同的高度?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48783231/