考虑以下两种情况： <div class="highlight highlight-text-html-basic notranslate position-rel

我试了一下，chrome对slot的支持也是这样的，为了保持一致，就不改了。测试代码如下： <div class="highl

[question] 只有空白字符仍被认作有效内容被填充到 default slot about san HOT 2 CLOSED

baidu commented on May 2, 2024 1

[question] 只有空白字符仍被认作有效内容被填充到 default slot

from san.

Comments (2)

leeight commented on May 2, 2024

如果有 named 的 slot，并且 default slot 的内容 trim 之后是 ""，那么就忽略 default slot
否则保持原样？

from san.

errorrik commented on May 2, 2024

我试了一下，chrome对slot的支持也是这样的，为了保持一致，就不改了。

测试代码如下：

<!DOCTYPE html>
<html>
<head><meta charset="UTF-8"></head>
<body>
<script>
customElements.define('element-details',
  class extends HTMLElement {
    constructor() {
      super();
      var template = document
        .getElementById('element-details-template')
        .content;
      const shadowRoot = this.attachShadow({mode: 'open'})
        .appendChild(template.cloneNode(true));
  }
})
</script>

<template id="element-details-template">
  <style>
  details {font-family: "Open Sans Light",Helvetica,Arial}
  .name {font-weight: bold; color: #217ac0; font-size: 120%}
  h4 { margin: 10px 0 -8px 0; }
  h4 span { background: #217ac0; padding: 2px 6px 2px 6px }
  h4 span { border: 1px solid #cee9f9; border-radius: 4px }
  h4 span { color: white }
  .attributes { margin-left: 22px; font-size: 90% }
  .attributes p { margin-left: 16px; font-style: italic }

  </style>
  <details>
    <summary>
      <span>
        <code class="name">&lt;<slot name="element-name">NEED NAME</slot>&gt;</code>
        <i class="desc"><slot name="description">NEED DESCRIPTION</slot></i>
      </span>
    </summary>
    <div class="attributes">
      <h4><span>Attributes</span></h4>
      <slot name="attributes"><p>None</p></slot>
      <div><slot>Default Slot</slot></div>
    </div>
  </details>
  <hr>
</template>

<element-details><span slot="element-name">slot</span><span slot="description">A placeholder inside a web
    component that users can fill with their own markup,
    with the effect of composing different DOM trees
    together.</span></element-details>

</body>
</html>