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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Using JSONata in a Node application · JSONata</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="## Installing from NPM"/><meta name="docsearch:version" content="2.0.0"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Using JSONata in a Node application · JSONata"/><meta property="og:type" content="website"/><meta property="og:url" content="http://docs.jsonata.org/"/><meta property="og:description" content="## Installing from NPM"/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/img/jsonata-button.png"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script 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</script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/jsonata-js/jsonata/edit/master/docs/using-nodejs.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Using JSONata in a Node application</h1></header><article><div><span><h2><a class="anchor" aria-hidden="true" id="installing-from-npm"></a><a href="#installing-from-npm" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Installing from NPM</h2>
<p><code>npm install jsonata</code></p>
<h2><a class="anchor" aria-hidden="true" id="example-nodejs-application"></a><a href="#example-nodejs-application" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Example nodejs application</h2>
<pre><code class="hljs"><span class="hljs-keyword">const</span> jsonata = <span class="hljs-built_in">require</span>(<span class="hljs-string">'jsonata'</span>);
<span class="hljs-keyword">const</span> data = {
example: [
{value: <span class="hljs-number">4</span>},
{value: <span class="hljs-number">7</span>},
{value: <span class="hljs-number">13</span>}
]
};
<span class="hljs-function">(<span class="hljs-params"><span class="hljs-keyword">async</span> (<span class="hljs-params"></span>) => {
<span class="hljs-keyword">const</span> expression = jsonata(<span class="hljs-params">'$sum(<span class="hljs-params">example.value</span>)'</span>);
<span class="hljs-keyword">const</span> result = <span class="hljs-keyword">await</span> expression.evaluate(<span class="hljs-params">data</span>); <span class="hljs-comment">// returns 24</span>
}</span>)<span class="hljs-params">()</span>
</span></code></pre>
<h2><a class="anchor" aria-hidden="true" id="es5-runtimes"></a><a href="#es5-runtimes" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>ES5 runtimes</h2>
<p>e.g. Nashorn,</p>
<p>Use <code>jsonata-es5.js</code> or <code>jsonata-es5.min.js</code></p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/overview"><span class="arrow-prev">← </span><span>Overview</span></a><a class="docs-next button" href="/using-browser"><span>In a Web Page</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#installing-from-npm">Installing from NPM</a></li><li><a href="#example-nodejs-application">Example nodejs application</a></li><li><a href="#es5-runtimes">ES5 runtimes</a></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><a href="/" class="nav-home"><img src="/img/jsonata-white-167.png" alt="JSONata"/></a><div><h5>JSONata</h5><a href="http://jsonata.org" target="_blank" rel="noreferrer noopener">JSON query and<br/>transformation language</a><a href="http://try.jsonata.org" target="_blank" rel="noreferrer noopener">Go play in the<br/>JSONata Exerciser</a></div><div><h5>Community</h5><a href="https://stackoverflow.com/questions/tagged/jsonata" target="_blank" rel="noreferrer noopener">Stack Overflow</a><a href="https://jsonata.slack.com/">Project Chat</a><a href="https://twitter.com/" target="_blank" rel="noreferrer noopener">Twitter</a></div><div><h5>More</h5><a href="https://github.com/jsonata-js/jsonata">GitHub</a><a class="github-button" href="https://github.com/jsonata-js/jsonata" data-icon="octicon-star" data-count-href="/jsonata-js/jsonata/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star this project on GitHub">Star</a></div></section><section class="copyright">Copyright © 2021 JSONata.org</section></footer></div></body></html>