This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The PluginArray interface is used to store a list of Plugin objects describing the available plugins; it's returned by the window.navigator.plugins property. The PluginArray is not a JavaScript array, but has the length property and supports accessing individual items using bracket notation (plugins[2]), as well as via item(index) and namedItem("name") methods.

Note: Own properties of PluginArray objects are no longer enumerable in the latest browser versions.


PluginArray.lengthRead only
The number of plugins in the array.


Returns the Plugin at the specified index into the array.
Returns the Plugin with the specified name.
Refreshes all plugins on the current page, optionally reloading documents.


The following example function returns the version of the Shockwave Flash plugin.

var pluginsLength = navigator.plugins.length;

document.body.innerHTML = pluginsLength + " Plugin(s)<br>"
  + '<table id="pluginTable"><thead>'

var table = document.getElementById('pluginTable');

for(var i = 0; i < pluginsLength; i++) {
  let newRow = table.insertRow();
  newRow.insertCell().textContent = navigator.plugins[i].name;
  newRow.insertCell().textContent = navigator.plugins[i].filename;
  newRow.insertCell().textContent = navigator.plugins[i].description;
  newRow.insertCell().textContent = navigator.plugins[i].version?navigator.plugins[i].version:"";

The following example displays information about the installed plugin(s).

var pluginsLength = navigator.plugins.length;

  pluginsLength.toString() + " Plugin(s)<br>" +
  "Name | Filename | description<br>"

for(var i = 0; i < pluginsLength; i++) {
    navigator.plugins[i].name +
    " | " +
    navigator.plugins[i].filename +
    " | " +
    navigator.plugins[i].description +
    " | " +
    navigator.plugins[i].version +


Specification Status Comment
HTML Living Standard
The definition of 'PluginArray' in that specification.
Living Standard Initial definition.

Browser compatibility

BCD tables only load in the browser

In addition to listing each plugin as a pseudo-array by zero-indexed numeric properties, Firefox provides properties that are the plugin name directly on the PluginArray object.