Angular Flex Layout：是否允许在子元素或容器内嵌套容器元素？

Absolutely! Nesting elements with fxLayout (Flex Layout containers) is totally allowed and actually one of the most common patterns for building complex, responsive layouts with Angular Flex Layout. Each fxLayout directive creates its own independent flex context, so child containers won't interfere with the parent's layout rules.

Let's take your example code and confirm it's perfectly valid:

<div fxLayout="column"> 
  <div fxFlex="100%"> column item A </div> 
  <div fxFlex="100%"> 
    column item B 
    <div fxLayout="row"> 
      <div fxFlex="100%">row item A </div> 
      <div fxFlex="100%"></div>
    </div>
  </div>
</div>

In this snippet:

• The outer <div fxLayout="column"> sets up a vertical flex container.
• The second child <div fxFlex="100%"> takes up the full height of its parent column, and inside it, you've nested a horizontal <div fxLayout="row"> container—this works flawlessly.
• The fxFlex values inside the row container are relative to that row's width, not the outer column's width, which is exactly how Flexbox (and Angular Flex Layout) is designed to work.

A quick note: Just make sure each fxLayout element is a block-level element (which <div> is by default) to avoid unexpected layout behavior, but that's standard practice anyway.

内容的提问来源于stack exchange，提问作者userx