Addon Mozilla MDNAdd ons using the techniques described in this document are considered a legacy technology in Firefox. Dont use these techniques to develop new add ons. Use Web. Extensions instead. If you maintain an add on which uses the techniques described here, consider migrating it to use Web. Extensions. Starting from Firefox 5. AMO for desktop Firefox and Firefox for Android. Starting from Firefox 5. Best-Mozilla-Firefox-Addons-for-Developers.png' alt='Mozilla Add On' title='Mozilla Add On' />Web. Extensions APIs will be supported on Desktop Firefox and Firefox for Android. Even before Firefox 5. Firefox platform will break many legacy extensions. These changes include multiprocess Firefox e. Legacy extensions that are affected by these changes should migrate to use Web. Extensions APIs if they can. See the Compatibility Milestones document for more information. A wiki page containing resources, migration paths, office hours, and more, is available to help developers transition to the new technologies. An Addon represents an add on that is either installed or can be installed. Instances can be created using the many get. Addon methods on the Addon. Manager object. The interface can represent many different kinds of add ons and as such, some of the methods and properties are considered required and others optional, which means that the optional methods or property may not exist on Addon instances for some types of add ons. API consumers should take care to verify the existence of these methods or properties before relying on them. Add OnsOverview of required methods. Overview of optional methods. NoScript for Firefox preemptively blocks malicious scripts and allows JavaScript, Java and other potentially dangerous content only from sites you trust. Download it. This giftgiving season, Mozilla is helping you choose gadgets that respect your online privacy and security advocacy. Is your smart. Addons allow developers to extend and modify the functionality of Firefox. Required propertiesapp. Disabled. Read only boolean. True if this add on cannot be used in the application based on version compatibility, dependencies, and blocklisting. State. Read only integer. The current blocklist state of this add on see ns. IBlocklist. Service for possible values. Read only Addon. Author. The creator of the add on. Install. Read only boolean. True or false depending on whether the add on is a third party add on installation or not. Read only string. The ID of the add on. No other installed add on will have the same ID. Active. Read only boolean. True if the add on is currently functional. For some add ons this will change immediately based on the app. Disabled and user. Lords Of The Realm 2 Dos Download more. Disabled properties for others it will only change after an application restart. Compatible. Read only boolean. True or false depending on whether the add on is compatible with the current application version and platform version. Platform. Compatible. Read only boolean. True or false depending on whether the add on is compatible with the current operating system. Read only string. The name of the add on. Operations. Read only integer. A bitfield holding all of the current operations that are waiting to be performed for this add on. Operations are generally deferred when a restart is necessary to accomplish them. Read only integer. A bitfield holding all the the operations that can be performed on this add on. Operations my be restricted based on system policies e. Updates. Securely. Read only boolean. True if the add on has a secure means of updating or cannot be updated at all. Read only integer. Firefox AddIndicates what scope the add on is installed in, per profile, user, system, or application. Read only string. The type of the add on. Disabledboolean. True if the user wants this add on to be disabled. Read only string. The version of the add on. Optional propertiesabout. URLRead only string. The URL of the about dialog to display for this add on. This is passed to window. Dialog when presenting the about dialog. Naruto Season 1 Episode 1 English Sub. If you dont provide an about. URL, a generic about dialog is displayed. The dialog receives the Addon object representing your add on as a parameter. Background. Updatesinteger. Indicates whether updates found in the background for this add on will be applied automatically. See auto update values. The user is provided a UI for this in the add ons manager and its the add on providers responsibility to remember its selection. Read only Addon. AuthorAn array of strings holding the contributors of the add on. Read only string. The description of the add on. Read only Addon. AuthorAn array of strings holding the developers of the add on. URLRead only string. The homepage URL of the add on. URLRead only string. The url of the icon that represents this add on. Read only Addon. Install. The Addon. Install that will install this add on. Only available if this add on is in the process of being installed. Date. Read only Date. The Date that the add on was first installed. URLRead only string. The url of the options dialog to display for this add on. Upgrade. Read only Addon. If this add on will be replaced on the next restart, this property will hold the new Addon object. Notes. URIRead only ns. IURIA uri for release notes for this version. Read only Addon. ScreenshotAn array of Addon. Screenshot objects containing urls of preview images for the add on. Read only integer. The size of the add ons files in bytes. For an add on that has not yet been downloaded, this may be an estimated value. URIRead only ns. IURIThe uri that this add on was installed from. GUIDRead only string. String GUID to identify the add on in sync. The GUID is generated randomly and is made consistent across devices during sync. Read only Addon. AuthorAn array of strings holding the translators of the add on. Date. Read only Date. The Date that the add on was most recently updated. Requiring. Restart. Read only integer. A bitfield holding all of the operations that will require a restart to complete for this add on. Description. Read only string developer. Comments. Read only string eula. Read only string icon. URLRead only string support. URLRead only string contribution. URLRead only string contribution. Amount. Read only string average. Rating. Read only number review. Count. Read only integer review. URLRead only string total. Downloads. Read only integer weekly. Downloads. Read only integer daily. Users. Read only integer repository. Status. Read only integer Callbacks. Data. Directory. CallbackA callback which is passed a directory path, and, when an error has occured, an Error object. Data. Directory. Callback. Error error. Parameterspath. A string representation of the Addons data directory. If an error has occured, an Error object relevant to the error, othereise null. Required Methodsis. Compatible. WithTests whether this add on is known to be compatible with a particular application and platform version. Compatible. With. Version. in string platform. Version. Parametersapp. Version. An application version to test againstplatform. Version. A platform version to test againstfind. UpdatesStarts an update check for this add on. This will perform asynchronously and deliver results to the given listener. Updates. in Update. Listener listener. Version. in string platform. Version. Parameterslistener. An Update. Listener for the update processreason. A reason code for performing the updateapp. Version. An application version to check for updates forplatform. Version. A platform version to check for updates for. Optional MethodsuninstallUninstalls this add on. If possible the uninstall will happen immediately, otherwise it will wait until the next application restart. This method must be defined if an add on has the permission PERMCANUNINSTALL. UninstallCancels uninstalling an add on if it is pending uninstall. This method must be defined if an add on has the pending. Operation PENDINGUNINSTALL.