reactR/docs/articles/intro_reactR.html at develop · react-R/reactR · GitHub

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      </header><script src="intro_reactR_files/react-18.2.0/react.min.js"></script><script src="intro_reactR_files/react-18.2.0/react-dom.min.js"></script><div class="row">
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      <h1 data-toc-skip>Intro to reactR</h1>
                        <h4 data-toc-skip class="author">Kent
Russell</h4>

            <h4 data-toc-skip class="date">2024-09-14</h4>

      <small class="dont-index">Source: <a href="https://github.com/react-R/reactR/blob/HEAD/vignettes/intro_reactR.Rmd" class="external-link"><code>vignettes/intro_reactR.Rmd</code></a></small>
      <div class="hidden name"><code>intro_reactR.Rmd</code></div>

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<div class="section level2">
<h2 id="why-reactr">Why reactR?<a class="anchor" aria-label="anchor" href="#why-reactr"></a>
</h2>
<p><a href="https://reactjs.org/" class="external-link"><code>react</code></a> has become
incredibly popular, and the ecosystem around <code>react</code> is
robust. <code>reactR</code> aims to allow <code>R</code> users to more
easily incorporate <code>react</code> and <code>JSX</code>.</p>
</div>
<div class="section level2">
<h2 id="install">Install<a class="anchor" aria-label="anchor" href="#install"></a>
</h2>
<pre><code><span><span class="fu"><a href="https://rdrr.io/r/utils/install.packages.html" class="external-link">install.packages</a></span><span class="op">(</span><span class="st">"reactR"</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># for the latest development version</span></span>
<span><span class="co">#  install from Github</span></span>
<span><span class="co"># devtools::install_github("timelyportfolio/reactR")</span></span></code></pre>
</div>
<div class="section level2">
<h2 id="quick-example">Quick Example<a class="anchor" aria-label="anchor" href="#quick-example"></a>
</h2>
<p>Let’s use <code>react</code> to render a simple <code>h1</code> HTML
element below.</p>
<div id="react-heading-here">

</div>
<div class="sourceCode" id="cb2"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/react-R/reactR" class="external-link">reactR</a></span><span class="op">)</span></span>
<span><span class="kw"><a href="https://rdrr.io/r/base/library.html" class="external-link">library</a></span><span class="op">(</span><span class="va"><a href="https://github.com/rstudio/htmltools" class="external-link">htmltools</a></span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">## Warning: package 'htmltools' was built under R version 4.3.3</span></span></code></pre>
<div class="sourceCode" id="cb4"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="https://rstudio.github.io/htmltools/reference/htmlDependencies.html" class="external-link">attachDependencies</a></span><span class="op">(</span></span>
<span>  <span class="va">tags</span><span class="op">$</span><span class="fu">script</span><span class="op">(</span></span>
<span>  <span class="st">"</span></span>
<span><span class="st">    ReactDOM.render(</span></span>
<span><span class="st">      React.createElement(</span></span>
<span><span class="st">        'h1',</span></span>
<span><span class="st">        null,</span></span>
<span><span class="st">        'Powered by React'</span></span>
<span><span class="st">      ),</span></span>
<span><span class="st">      document.getElementById('react-heading-here')</span></span>
<span><span class="st">    )</span></span>
<span><span class="st">  "</span></span>
<span>  <span class="op">)</span>,</span>
<span>  <span class="fu"><a href="../reference/html_dependency_react.html">html_dependency_react</a></span><span class="op">(</span><span class="op">)</span></span>
<span><span class="op">)</span></span></code></pre></div>
<script>
    ReactDOM.render(
      React.createElement(
        'h1',
        null,
        'Powered by React'
      ),
      document.getElementById('react-heading-here')
    )
  </script>
</div>
<div class="section level2">
<h2 id="blog-post">Blog Post<a class="anchor" aria-label="anchor" href="#blog-post"></a>
</h2>
<p>For more on how we can use R and React, see the blog post <a href="https://www.jsinr.me/2017/11/19/react-in-r/" class="external-link">React in R</a>. Also,
there are many more examples in the Github repo at <a href="https://github.com/react-R/reactR/tree/master/inst/examples" class="external-link">inst/examples</a>.</p>
</div>
<div class="section level2">
<h2 id="using-jsx">Using JSX<a class="anchor" aria-label="anchor" href="#using-jsx"></a>
</h2>
<p><a href="https://reactjs.org/docs/jsx-in-depth.html" class="external-link"><code>JSX</code></a>
helps ease some of the burden caused by
<code>React.createElement</code>. <code>reactR</code> provides a
<code><a href="../reference/babel_transform.html">babel_transform()</a></code> function to use <code>JSX</code>.
Hopefully, in the future, we can convince RStudio to modify
<code>htmltools</code> to work directly with <code>JSX</code> (see <a href="https://github.com/rstudio/htmltools/pull/72" class="external-link">issue</a>).</p>
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