---
title: mousedown
slug: Web/API/Element/mousedown_event
tags:
  - API
  - DOM
  - Evento
  - Interfaz
translation_of: Web/API/Element/mousedown_event
---
<p>El evento <code>mousedown</code> se activa cuando el botón de un dispositivo apuntador (usualmente el botón de un ratón) es presionado en un elemento.</p>

<h2 id="General_info">General info</h2>

<dl>
 <dt style="float: left; text-align: right; width: 120px;">Especificación</dt>
 <dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.w3.org/TR/DOM-Level-3-Events/#event-type-mousedown">DOM L3</a></dd>
 <dt style="float: left; text-align: right; width: 120px;">Interface</dt>
 <dd style="margin: 0 0 0 120px;">{{domxref("MouseEvent")}}</dd>
 <dt style="float: left; text-align: right; width: 120px;">Bubbles</dt>
 <dd style="margin: 0 0 0 120px;">Sí</dd>
 <dt style="float: left; text-align: right; width: 120px;">Cancelable</dt>
 <dd style="margin: 0 0 0 120px;">Sí</dd>
 <dt style="float: left; text-align: right; width: 120px;">Target</dt>
 <dd style="margin: 0 0 0 120px;">Elemento</dd>
 <dt style="float: left; text-align: right; width: 120px;">Default Action</dt>
 <dd style="margin: 0 0 0 120px;">Varios: Comenzar una acción de arrastrar y soltar; comenzar la selección de un texto; comenzar una interacción de desplazamiento (en combinación con el botón medio del mouse, si es soportado)</dd>
</dl>

<h2 id="Properties">Properties</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><a href="/en-US/docs/Web/API/EventTarget" title="EventTarget is an interface implemented by objects that can receive events and may have listeners for them."><code>EventTarget</code></a></td>
   <td>The event target (the topmost target in the DOM tree).</td>
  </tr>
  <tr>
   <td><code>type</code> {{readonlyInline}}</td>
   <td><a href="/en-US/docs/Web/API/DOMString" title="DOMString is a UTF-16 String. As JavaScript already uses such strings, DOMString is mapped directly to a String."><code>DOMString</code></a></td>
   <td>The type of event.</td>
  </tr>
  <tr>
   <td><code>bubbles</code> {{readonlyInline}}</td>
   <td><a href="/en-US/docs/Web/API/Boolean" title="The Boolean object is an object wrapper for a boolean value."><code>Boolean</code></a></td>
   <td>Whether the event normally bubbles or not</td>
  </tr>
  <tr>
   <td><code>cancelable</code> {{readonlyInline}}</td>
   <td><a href="/en-US/docs/Web/API/Boolean" title="The Boolean object is an object wrapper for a boolean value."><code>Boolean</code></a></td>
   <td>Whether the event is cancellable or not?</td>
  </tr>
  <tr>
   <td><code>view</code> {{readonlyInline}}</td>
   <td><a class="new" href="/en-US/docs/Web/API/WindowProxy" rel="nofollow" title="The documentation about this has not yet been written; please consider contributing!"><code>WindowProxy</code></a></td>
   <td><a href="/en-US/docs/Web/API/Document/defaultView" title="In browsers, document.defaultView returns the window object associated with a document, or null if none is available."><code>document.defaultView</code></a> (<code>window</code> of the document)</td>
  </tr>
  <tr>
   <td><code>detail</code> {{readonlyInline}}</td>
   <td><code>long</code> (<code>float</code>)</td>
   <td>A count of consecutive clicks that happened in a short amount of time, incremented by one.</td>
  </tr>
  <tr>
   <td><code>currentTarget</code> {{readonlyInline}}</td>
   <td>EventTarget</td>
   <td>The node that had the event listener attached.</td>
  </tr>
  <tr>
   <td><code>relatedTarget</code> {{readonlyInline}}</td>
   <td>EventTarget</td>
   <td>For <code>mouseover</code>, <code>mouseout</code>, <code>mouseenter</code> and <code>mouseleave</code> events: the target of the complementary event (the <code>mouseleave</code> target in the case of a <code>mouseenter</code> event). <code>null</code> otherwise.</td>
  </tr>
  <tr>
   <td><code>screenX</code> {{readonlyInline}}</td>
   <td>long</td>
   <td>The X coordinate of the mouse pointer in global (screen) coordinates.</td>
  </tr>
  <tr>
   <td><code>screenY</code> {{readonlyInline}}</td>
   <td>long</td>
   <td>The Y coordinate of the mouse pointer in global (screen) coordinates.</td>
  </tr>
  <tr>
   <td><code>clientX</code> {{readonlyInline}}</td>
   <td>long</td>
   <td>The X coordinate of the mouse pointer in local (DOM content) coordinates.</td>
  </tr>
  <tr>
   <td><code>clientY</code> {{readonlyInline}}</td>
   <td>long</td>
   <td>The Y coordinate of the mouse pointer in local (DOM content) coordinates.</td>
  </tr>
  <tr>
   <td><code>button</code> {{readonlyInline}}</td>
   <td>unsigned short</td>
   <td>The button number that was pressed when the mouse event was fired: Left button=0, middle button=1 (if present), right button=2. For mice configured for left handed use in which the button actions are reversed the values are instead read from right to left.</td>
  </tr>
  <tr>
   <td><code>buttons</code> {{readonlyInline}}</td>
   <td>unsigned short</td>
   <td>The buttons being pressed when the mouse event was fired: Left button=1, Right button=2, Middle (wheel) button=4, 4th button (typically, "Browser Back" button)=8, 5th button (typically, "Browser Forward" button)=16. If two or more buttons are pressed, returns the logical sum of the values. E.g., if Left button and Right button are pressed, returns 3 (=1 | 2). <a href="/en-US/docs/Web/API/MouseEvent">More info</a>.</td>
  </tr>
  <tr>
   <td><code>mozPressure</code> {{readonlyInline}}</td>
   <td>float</td>
   <td>The amount of pressure applied to a touch or tabdevice when generating the event; this value ranges between 0.0 (minimum pressure) and 1.0 (maximum pressure).</td>
  </tr>
  <tr>
   <td><code>ctrlKey</code> {{readonlyInline}}</td>
   <td>boolean</td>
   <td><code>true</code> if the control key was down when the event was fired. <code>false</code> otherwise.</td>
  </tr>
  <tr>
   <td><code>shiftKey</code> {{readonlyInline}}</td>
   <td>boolean</td>
   <td><code>true</code> if the shift key was down when the event was fired. <code>false</code> otherwise.</td>
  </tr>
  <tr>
   <td><code>altKey</code> {{readonlyInline}}</td>
   <td>boolean</td>
   <td><code>true</code> if the alt key was down when the event was fired. <code>false</code> otherwise.</td>
  </tr>
  <tr>
   <td><code>metaKey</code> {{readonlyInline}}</td>
   <td>boolean</td>
   <td><code>true</code> if the meta key was down when the event was fired. <code>false</code> otherwise.</td>
  </tr>
 </tbody>
</table>

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

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Edge</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
  <tr>
   <td>On disabled form elements</td>
   <td>{{CompatVersionUnknown}}<sup>[1]</sup></td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}<sup>[1]</sup></td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
  <tr>
   <td>On disabled form elements</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<p>[1] Sólo funciona para elementos {{HTMLElement("textarea")}} y algunos elementos tipo {{HTMLElement("input")}}.</p>

<h2 id="Ver_también">Ver también</h2>

<ul>
 <li>{{event("mousedown")}}</li>
 <li>{{event("mouseup")}}</li>
 <li>{{event("mousemove")}}</li>
 <li>{{event("click")}}</li>
 <li>{{event("dblclick")}}</li>
 <li>{{event("mouseover")}}</li>
 <li>{{event("mouseout")}}</li>
 <li>{{event("mouseenter")}}</li>
 <li>{{event("mouseleave")}}</li>
 <li>{{event("contextmenu")}}</li>
</ul>