flex-direction 列弹性容器中弹性项目的高度相同

Question

有没有办法让 flex 容器中的 flex 项目flex-direction: column具有相同的高度，只使用 CSS？

<div style="display: flex; flex-direction: column;">
 <div class="flex-item">
   <!-- other html elements with image, links, button etc. -->
 </div>
 <!-- ... -->
 <div class="flex-item"></div>
</div>

JSFiddle：https ://jsfiddle.net/hzxa9v54/

Answer 1

您将需要一个脚本来使用 Flexbox 解决这个问题，这里使用 jQuery 完成。

更新了小提琴

堆栈片段

(function ($) {

  // preload object array to gain performance
  var $items = $('.item')
  
  // run at resize
  $( window ).resize(function() {
    $.fn.setHeight(0);   
  });  

  $.fn.setHeight = function(height) {

    // reset to auto or else we can't check height
    $($items).css({ 'height': 'auto' });
    
    // get highest value
    $($items).each(function(i, obj) {    
      height = Math.max(height, $(obj).outerHeight()) 
    });

    // set the height
    $($items).css({ 'height': height + 'px' });    
  }

  // run at load
  $.fn.setHeight(0);
  
}(jQuery));

.container {
  display: flex;
  flex-direction: column;
  width: 200px;
}
.item {
  border: 1px solid #ddd;
  margin: 10px 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
  <div class="item">
    come content 1
  </div>
  <div class="item">
    come content 2
    come content 3
  </div>
  <div class="item">
    come content 4
    come content 5
    come content 6
  </div>
  <div class="item">
    come content 7
  </div>
</div>

根据评论进行更新，例如还需要考虑加载图像。

这是脚本的更新版本，可在图像加载后进行调整。

(function ($) {

  // preload object array to gain performance
  var $items = $('.item')
  
  // run at resize
  $( window ).resize(function() {
    $.fn.setHeight(0);   
  });  

  $.fn.setHeight = function(height) {

    // reset to auto or else we can't check height
    $($items).css({ 'height': 'auto' });
    
    // get highest value
    $($items).each(function(i, obj) {    
      height = Math.max(height, $(obj).outerHeight()) 
    });

    // set the height
    $($items).css({ 'height': height + 'px' });    
  }

  function imageLoaded() {
    $.fn.setHeight(0);
  }
  
  var images = $('.item img');
  if (images) {
    images.each(function() {
      if( this.complete ) {
        imageLoaded.call( this );
      } else {
        $(this).one('load', imageLoaded);
      }
    });
  } else {
    // run at load
    $.fn.setHeight(0);
  }

}(jQuery));

.container {
  display: flex;
  flex-direction: column;
  width: 200px;
}
.item {
  border: 1px solid #ddd;
  margin: 10px 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
  <div class="item">
    come content 1
  </div>
  <div class="item">    
    <img src="http://placehold.it/200x100/f00" alt="">
  </div>
  <div class="item">
    come content 4
    come content 5
    come content 6
  </div>
  <div class="item">
    come content 7
  </div>
</div>