如何从文本节点中删除 <br> 并在其包含 <b>、<i>、<a> 等时用 <p> 标签包装

Question

我的情况（编辑）：

<div class="entry-content">
    <h1>This header won't be included</h1>
    Write by: Me
    <br></br>
    On: 01/01/2017
    <br></br>
    <br></br>
    When you quote: "<i>And whoever strives only strives for [the benefit of] himself.</i>"
    <br></br>
    <br></br>
    <i>There</i> is another: "And that <b>there is not for man</b> except that [good] for which he strives, and that his effort is going to be seen, then <a href="#">he will be</a> recompensed for it with the fullest recompense."
    <br></br>
    <br></br>
    <h2>And neither will this one</h2>
    I fight for myself.
</div>

我的目标（编辑）：

<div class="entry-content">
    <h1>This header won't be included</h1>
    <p>Write by: Me
    <br></br>
    On: 01/01/2017</p>
    <p>When you quote: "<i>And whoever strives only strives for [the benefit of] himself.</i>"</p>
    </p><i>There</i> is another: "And that <b>there is not for man</b> except that [good] for which he strives, and that his effort is going to be seen, then <a hre="#">he will be</a> recompensed for it with the fullest recompense."</p>
    <h2>And neither will this one</h2>
    <p>I fight for myself.</p>
</div>

我试过了：

$( ".entry-content" )
  .contents()
  .filter(function() {
     return this.nodeType === 3;
   })
  .wrap( "<p></p>" )
  .end()
  .filter( "br" )
  .remove();

我以前也读过很多这样的文章：How can I wrap text nodes。但是他们无法处理<i>、<b>、<a>等。

它们看起来像这样：

<div class="entry-content">
    <p><h1>This header won't be included</h1></p>
    <p>Write by: Me</p>
    <p>On: 01/01/2017</p>
    <p>When you quote: "</p>
    <i>And whoever strives only strives for [the benefit of] himself.</i>
    <p>"</p>
    <i>There</i>
    <p>is another: "And that <b>there is not for man</b> except that [good] for which he strives, and that his effort is going to be seen, then</p>
    <a hre="#">he will be</a>
    <p>recompensed for it with the fullest recompense."</p>
    <p><h2>And neither will this one</h2></p>
    <p>I fight for myself.</p>
</div>

Answer 1

这是一个不涉及接触内部 HTML 文本的“单行”。它的工作原理是用自己的段落包装每个节点，然后解开每个 br，以便可以使用相邻的兄弟选择器和第一个子选择器来找到包装段落应该开始的点。

编辑：为了特别排除包含具有源属性的图像的标题、块引用和锚点，我不得不让它变得更长。一个更高效的实现是在没有 jQuery 的情况下遍历子节点；如果您需要经常运行，请告诉我，我可以提供替代实现。 jQuery 处理文本节点的方式很难解决，除了.contents() 之外，几乎所有操作都会丢弃它们。

console.log(
  
// Begin magic
$('.entry-content')
    .contents()
    .wrap('<p>')
    .filter('br, :header, blockquote, a:has(img[src])')
    .unwrap()
    .end()
    .end()
    .children(':first-child, :not(p) + p')
    .each(function (i, e) {
        $(e).nextUntil(':not(p)').addBack().wrapAll('<p>').contents().unwrap()
    })
    .end()
    .children(':first-child, :not(p) + p')
    .each(function (i, e) {
        e.firstElementChild || e.textContent.trim() || $(e).remove()
    })
    .end()
    .children('br')
    .remove()
// End magic

.end().html())

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
    <h1>This header won't be included</h1>
    When you quote: "<i>And whoever strives only strives for [the benefit of] himself.</i>"
    <br><br>
    <i>There</i> is another: "And that <b>there is not for man</b> except that [good] for which he strives, and that his effort is going to be seen, then <a href="#">he will be</a> recompensed for it with the fullest recompense."
    <br><br>
    <h2>And neither will this one</h2>
    I fight for myself.
    <blockquote>Keep me</blockquote>
    I am special.
    <a><img src="http://ignore-me.com"></a>
    There <b>is</b> nothing more special than everything
    <a><img src="http://ignore-me-too.com"></a>
</div>

Answer 2

我希望这是你需要的：

var rows = $(".entry-content").html().split("<br>");
rows = $.map(rows, function(value) {
  return value === "" ? null : value;
});
$(".entry-content").html('<p>' + rows.join("</p>\n<p>") + '</p>');
console.log($(".entry-content").html());

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="entry-content">
    When you quote: "<i>And whoever strives only strives for [the benefit of] himself.</i>"
    <br><br>
    <i>There</i> is another: "And that <b>there is not for man</b> except that [good] for which he strives, and that his effort is going to be seen, then <a hre="#">he will be</a> recompensed for it with the fullest recompense."
    <br><br>
    I fight for myself.
</div>