css - 当 flex 元素包含输入元素时，不遵守 Flexbox flex-grow 属性

Question

我正在使用 flexbox 制作聊天 UI。首先使用 flex-grow 属性，我将布局分成 2 列，比例为 2/5，然后我将这 2 列分成行，第一列的比例为 1/9，第二列的比例为 5/1。当我没有将输入元素添加到 HTML 代码时，这是我所拥有的:

https://codepen.io/thenr/pen/PoooyEN

#chat {
  display: flex;
  width: 100%;
  height: calc(100vh - 2em);
  overflow-y: hidden;
}

#friends {
  flex-grow: 2;
  display: flex;
  flex-direction: column;
  border: 1px solid black;
}

#messages {
  flex-grow: 5;
  display: flex;
  flex-direction: column;
  border: 1px solid black;
}

#searchfriend {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 120px;
  border: 1px solid black;
  background-color: blue;
}

#searchfriend input[type="text"] {
  margin: 0;
  padding: 1em;
  border: 0;
  border-radius: 0px;
  background-color: #d1d1d1;
}

#friendslist {
  flex-grow: 9;
  border: 1px solid black;
  overflow-y: auto;
}

.friend {
  height: 100px;
  border: 1px solid black;
}

#chatmessages {
  flex-grow: 5;
  border: 1px solid black;
}

#writemessage {
  flex-grow: 1;
  border: 1px solid black;
}

<div id="chat">
  <!-- friends -->
  <div id="friends">
    <div id="searchfriend">

    </div>
    <div id="friendslist">
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>

    </div>
  </div>

  <!-- chat -->
  <div id="messages">
    <div id="chatmessages">



    </div>
    <div id="writemessage">

    </div>
  </div>
</div>

问题是，当我将输入元素添加到 HTML 代码时，我设置的比例没有得到遵守，并且包含这些输入元素的 flex 元素变得更大，我不希望这种情况发生。相同的 HTML 代码，但添加了输入元素:

https://codepen.io/thenr/pen/RwwweQN

#chat {
  display: flex;
  width: 100%;
  height: calc(100vh - 2em);
  overflow-y: hidden;
}

#friends {
  flex-grow: 2;
  display: flex;
  flex-direction: column;
  border: 1px solid black;
}

#messages {
  flex-grow: 5;
  display: flex;
  flex-direction: column;
  border: 1px solid black;
}

#searchfriend {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 120px;
  border: 1px solid black;
  background-color: blue;
}

#searchfriend input[type="text"] {
  margin: 0;
  padding: 1em;
  border: 0;
  border-radius: 0px;
  background-color: #d1d1d1;
}

#friendslist {
  flex-grow: 9;
  border: 1px solid black;
  overflow-y: auto;
}

.friend {
  height: 100px;
  border: 1px solid black;
}

#chatmessages {
  flex-grow: 5;
  border: 1px solid black;
}

#writemessage {
  flex-grow: 1;
  border: 1px solid black;
}

<div id="chat">
  <!-- friends -->
  <div id="friends">
    <div id="searchfriend">
      <input type="text" name="" id="searchtext" placeholder="Search friend...">

    </div>
    <div id="friendslist">
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>
      <div class="friend"></div>

    </div>
  </div>

  <!-- chat -->
  <div id="messages">
    <div id="chatmessages">



    </div>
    <div id="writemessage">
      <form action="" id="formchat">
        <input type="text" name="msgtext" id="msgtext" autocomplete="off">
        <button id="msgsend">Send</button>
      </form>
    </div>
  </div>
</div>

Answer 1

您可以使用 flex 简写 flex:2/flex: 5 代替 flex-grow:2/flex-grow :5 。

这将避免同时设置 flex-shrink 和 flex-basis。