---
title: blur (evento)
slug: Web/Events/blur
translation_of: Web/API/Element/blur_event
---
<p>O evento <code>blur</code> é acionado quando um elemento perde foco. A diferença principal entre este evento e <a href="/en-US/docs/Mozilla_event_reference/focusout"><code>focusout</code></a> é que apenas o segundo 'borbulha'.</p>

<h2 id="Informação_geral">Informação geral</h2>

<dl>
 <dt style="float: left; text-align: right; width: 120px;">Especificação</dt>
 <dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.w3.org/TR/DOM-Level-3-Events/#event-type-blur">DOM L3</a></dd>
 <dt style="float: left; text-align: right; width: 120px;">Interface</dt>
 <dd style="margin: 0 0 0 120px;">{{domxref("FocusEvent")}}</dd>
 <dt style="float: left; text-align: right; width: 120px;">Borbulha</dt>
 <dd style="margin: 0 0 0 120px;">Não</dd>
 <dt style="float: left; text-align: right; width: 120px;">Cancelável</dt>
 <dd style="margin: 0 0 0 120px;">Não</dd>
 <dt style="float: left; text-align: right; width: 120px;">Alvo</dt>
 <dd style="margin: 0 0 0 120px;">Elemento</dd>
 <dt style="float: left; text-align: right; width: 120px;">Ação padrão</dt>
 <dd style="margin: 0 0 0 120px;">Nenhuma</dd>
</dl>

<p>{{NoteStart}}O valor de {{domxref("Document.activeElement")}} varia entre navegadores enquanto este evento é processado ({{bug(452307)}}): O IE10 define-o para o elemento para onde o foco moverá, enquanto Firefox e Chrome muitas vezes definem-o para o <code>body</code> do documento.{{NoteEnd}}</p>

<h2 id="Propriedades">Propriedades</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Property</th>
   <th scope="col">Type</th>
   <th scope="col">Description</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td><code>target</code> {{readonlyInline}}</td>
   <td>{{domxref("EventTarget")}}</td>
   <td>Event target (DOM element)</td>
  </tr>
  <tr>
   <td><code>type</code> {{readonlyInline}}</td>
   <td>{{domxref("DOMString")}}</td>
   <td>The type of event.</td>
  </tr>
  <tr>
   <td><code>bubbles</code> {{readonlyInline}}</td>
   <td>{{jsxref("Boolean")}}</td>
   <td>Whether the event normally bubbles or not.</td>
  </tr>
  <tr>
   <td><code>cancelable</code> {{readonlyInline}}</td>
   <td>{{jsxref("Boolean")}}</td>
   <td>Whether the event is cancellable or not.</td>
  </tr>
  <tr>
   <td><code>relatedTarget</code> {{readonlyInline}}</td>
   <td>{{domxref("EventTarget")}} (DOM element)</td>
   <td>null</td>
  </tr>
 </tbody>
</table>

<h2 id="Delegação_do_evento">Delegação do evento</h2>

<p>Existem duas maneiras de implementar a delegação de eventos para este evento: usando o evento <code>focusout</code> nos navegadores que suportam-o, ou definindo o parâmetro "useCapture" do <a href="/en-US/docs/DOM/element.addEventListener"><code>addEventListener</code></a> para <code>true</code>:</p>

<h3 id="Conteúdo_HTML">Conteúdo HTML </h3>

<pre class="brush:html;">&lt;form id="form"&gt;
  &lt;input type="text" placeholder="text input"&gt;
  &lt;input type="password" placeholder="password"&gt;
&lt;/form&gt;</pre>

<h3 id="Conteúdo_JavaScript">Conteúdo JavaScript</h3>

<pre class="brush: js">var form = document.getElementById("form");
form.addEventListener("focus", function( event ) {
  event.target.style.background = "pink";
}, true);
form.addEventListener("blur", function( event ) {
  event.target.style.background = "";
}, true);</pre>

<p>{{EmbedLiveSample('Event_delegation')}}</p>

<h2 id="Compatibilidade_entre_navegadores">Compatibilidade entre navegadores</h2>

<div>{{CompatibilityTable}}</div>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Suporte básico</td>
   <td>5</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}<sup>[1]</sup></td>
   <td>6</td>
   <td>12.1</td>
   <td>5.1</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Chrome para Android</th>
   <th>Edge</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Suporte básico</td>
   <td>4.0</td>
   <td>53</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>10.0</td>
   <td>12.1</td>
   <td>5.1</td>
  </tr>
 </tbody>
</table>
</div>

<p>[1] Antes do Gecko 24 {{geckoRelease(24)}} a interface para este elemento era {{domxref("Event")}}, não {{domxref("FocusEvent")}}. Veja ({{bug(855741)}}).</p>

<h2 id="Eventos_relacionados">Eventos relacionados</h2>

<ul>
 <li>{{event("focus")}}</li>
 <li>{{event("blur")}}</li>
 <li>{{event("focusin")}}</li>
 <li>{{event("focusout")}}</li>
</ul>