JSFiddle - React, Tailwind, and code Playground

HTML

<div class="blog-container">
  <div class="each-article">
    <p>
        Text text text <br/> text text text</p>
  </div>
  <div class="each-article">
    <p>Text text text <br/> text text text</p>
  </div>
</div>

JavaScript

$('.each-article p').each(function() {
    $(this).contents().filter(function() {
        return this.nodeType == 3;  
    }).wrap('<span></span>');
});