files/es/orphaned/web/api/body/json/index.html


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---
title: Body.json()
slug: orphaned/Web/API/Body/json
translation_of: Web/API/Body/json
original_slug: Web/API/Body/json
---
<div>{{APIRef("Fetch API")}}</div>

<p>El método <strong><code>json()</code></strong> de {{DOMxRef("Body")}} recibe un flujo de datos {{DOMxRef("Response")}} y lo lee a término. Devuelve una promesa con el cuerpo del texto transformado a {{JSxRef("JSON")}}.</p>

<h2 id="Sintáxis">Sintáxis</h2>

<pre class="syntaxbox"><em>response</em>.json().then(<em>data</em> =&gt; {
  // do something with your data
});</pre>

<h3 id="Parámetros">Parámetros</h3>

<p>No.</p>

<h3 id="Valor_devuelto">Valor devuelto</h3>

<p>Una {{jsxref("Promise")}} que se resuelve a un objeto JavaScript. Este objeto puede ser cualquier cosa que pueda ser representada por JSON (un objeto, un array, una cadena de caracteres, un número...).</p>

<h2 id="Example">Example</h2>

<p>In our <a href="https://github.com/mdn/fetch-examples/tree/master/fetch-json">fetch json example</a> (run <a href="http://mdn.github.io/fetch-examples/fetch-json/">fetch json live</a>), we create a new request using the {{DOMxRef("Request.Request", "Request()")}} constructor, then use it to fetch a <code>.json</code> file. When the fetch is successful, we read and parse the data using <code>json()</code>, then read values out of the resulting objects as you'd expect and insert them into list items to display our product data.</p>

<pre class="brush: js highlight[5]">const myList = document.querySelector('ul');
const myRequest = new Request('products.json');

fetch(myRequest)
  .then(response =&gt; response.json())
  .then(data =&gt; {
    for (const product of data.products) {
      let listItem = document.createElement('li');
      listItem.appendChild(
        document.createElement('strong')
      ).textContent = product.Name;
      listItem.append(
        ` can be found in ${
          product.Location
        }. Cost: `
      );
      listItem.appendChild(
        document.createElement('strong')
      ).textContent = `£${product.Price}`;
      myList.appendChild(listItem);
    }
  });</pre>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName("Fetch", "#dom-body-json", "Body.json()")}}</td>
   <td>{{Spec2("Fetch")}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>


<p>{{Compat("api.Body.json")}}</p>

<h2 id="See_also">See also</h2>

<ul>
 <li><a href="/en-US/docs/Web/API/ServiceWorker_API">ServiceWorker API</a></li>
 <li><a href="/en-US/docs/Web/HTTP/CORS">Cross-Origin Resource Sharing (CORS)</a></li>
 <li><a href="/en-US/docs/Web/HTTP">HTTP</a></li>
</ul>