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randomMDN

@randomMDN.front-end.social.ap.brid.gy

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A bot that randomly shares articles from MDN Web Docs *twice a day*, including browser support information. This bot is NOT related to or developed by @mozilla […] 🌉 bridged from ⁂ front-end.social/@randomMDN, follow @ap.brid.gy to interact

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randomMDN @randommdn.front-end.social.ap.brid.gy · 14h

🦖 HTTP reference 🦖 developer.mozilla.org/en-US/docs/We… This page lists HTTP reference documentation on MDN. #webdev #HTTP

developer.mozilla.org

HTTP reference - HTTP | MDN

This page lists HTTP reference documentation on MDN.

randomMDN @randommdn.front-end.social.ap.brid.gy · 23h

🦖 WebGL2RenderingContext: deleteVertexArray() method ✅ Widely available (from Sept 2021) developer.mozilla.org/en-US/docs/We… The WebGL2RenderingContext.deleteVertexArray() method of the WebGL 2 API deletes a given WebGLVertexArrayObject […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 04/10/2026

🦖 CSS animations 🦖 developer.mozilla.org/en-US/docs/We… The CSS animations module lets you animate the values of CSS properties, such as background-position and transform, over time by using keyframes. Each keyframe describes how the animated element should render […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 04/10/2026

🦖 SharedWorker: error event ☑️ Newly available (from May 2026) developer.mozilla.org/en-US/docs/We… The error event of the SharedWorker interface fires when an error occurs in the worker. #webdev

developer.mozilla.org

SharedWorker: error event - Web APIs | MDN

The error event of the SharedWorker interface fires when an error occurs in the worker.

randomMDN @randommdn.front-end.social.ap.brid.gy · 03/10/2026

🦖 SourceBuffer: abort event 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The abort event of the SourceBuffer interface is fired when the buffer appending is aborted, because the SourceBuffer.abort() or SourceBuffer.remove() method is called […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 03/10/2026

🦖 GPUCompilationMessage 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The GPUCompilationMessage interface of the WebGPU API represents a single informational, warning, or error message generated by the GPU shader module compiler. #webdev

developer.mozilla.org

GPUCompilationMessage - Web APIs | MDN

The GPUCompilationMessage interface of the WebGPU API represents a single informational, warning, or error message generated by the GPU shader module compiler.

randomMDN @randommdn.front-end.social.ap.brid.gy · 02/10/2026

🦖 ServiceWorkerContainer: startMessages() method ✅ Widely available (from Jan 2020) developer.mozilla.org/en-US/docs/We… The startMessages() method of the ServiceWorkerContainer interface explicitly starts the flow of messages being dispatched […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 02/10/2026

🦖 Object.prototype.__defineSetter__() 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The __defineSetter__() method of Object instances binds an object's property to a function to be called when an attempt is made […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 01/10/2026

🦖 ElementInternals: form property ✅ Widely available (from Mar 2023) developer.mozilla.org/en-US/docs/We… The form read-only property of the ElementInternals interface returns the HTMLFormElement associated with this element. #webdev

developer.mozilla.org

ElementInternals: form property - Web APIs | MDN

The form read-only property of the ElementInternals interface returns the HTMLFormElement associated with this element.

randomMDN @randommdn.front-end.social.ap.brid.gy · 01/10/2026

🦖 Deriving the quadratic formula 🦖 developer.mozilla.org/en-US/docs/We… This page outlines the derivation of the Quadratic Formula. Nine equations are organized in the <mtable> element to align the steps of the derivation by the equal sign […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 30/09/2026

🦖 Vary header ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The HTTP Vary response header describes the parts of the request message (aside from the method and URL) that influenced the content of the response it occurs in. Including […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 30/09/2026

🦖 ElementInternals: ariaRowSpan property ✅ Widely available (from Oct 2023) developer.mozilla.org/en-US/docs/We… The ariaRowSpan property of the ElementInternals interface reflects the value of the aria-rowspan attribute, which defines the number of […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 29/09/2026

🦖 autofocus ✅ Widely available (from Feb 2023) developer.mozilla.org/en-US/docs/We… The autofocus global SVG attribute defines a focusable element to be focused after it's connected to a document. The attribute has no effect if the element is not […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 29/09/2026

🦖 scriptlevel 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The scriptlevel global attribute sets the math-depth of a MathML element. It allows overriding rules from the user agent stylesheet that define automatic calculation […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 28/09/2026

🦖 align-items CSS property ✅ Widely available (from Sept 2015) developer.mozilla.org/en-US/docs/We… The CSS align-items property sets the align-self value on all direct children as a group. In flexbox, it controls the alignment of items on the cross […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 28/09/2026

🦖 Summarizer: sharedContext property 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The sharedContext read-only property of the Summarizer interface returns a string describing the context the pieces of text to summarize are being used in. This […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 27/09/2026

🦖 Access-Control-Allow-Origin header ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The HTTP Access-Control-Allow-Origin response header indicates whether the response can be shared with requesting code from […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 27/09/2026

🦖 AnalyserNode: smoothingTimeConstant property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The smoothingTimeConstant property of the AnalyserNode interface is a double value representing the averaging constant with the […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 26/09/2026

🦖 400 Bad Request 🦖 developer.mozilla.org/en-US/docs/We… The HTTP 400 Bad Request client error response status code indicates that the server would not process the request due to something the server considered to be a client error. The reason for a 400 […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 26/09/2026

🦖 js13kGames: Progressive loading 🦖 developer.mozilla.org/en-US/docs/We… In previous steps of this tutorial, we covered APIs that help us make our js13kPWA example a Progressive Web App using Service Workers, Web Manifests, and […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 25/09/2026

🦖 ARIA: aria-expanded attribute 🦖 developer.mozilla.org/en-US/docs/We… The aria-expanded attribute is set on an element to indicate if a control is expanded or collapsed, and whether or not the controlled elements are displayed or […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 25/09/2026

🦖 USBDevice: clearHalt() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The clearHalt() method of the USBDevice interface returns a Promise that resolves when a halt condition is cleared. A halt condition is when a data transfer to or from […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 24/09/2026

🦖 AudioEncoder: dequeue event 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The dequeue event of the AudioEncoder interface fires to signal a decrease in AudioEncoder.encodeQueueSize. #webdev

developer.mozilla.org

AudioEncoder: dequeue event - Web APIs | MDN

The dequeue event of the AudioEncoder interface fires to signal a decrease in AudioEncoder.encodeQueueSize.

randomMDN @randommdn.front-end.social.ap.brid.gy · 24/09/2026

🦖 SVGPatternElement: viewBox property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The viewBox read-only property of the SVGPatternElement interface reflects the viewBox attribute of the given element. It represents the x, y […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 23/09/2026

🦖 browsingContext.print command 🦖 developer.mozilla.org/en-US/docs/We… The browsingContext.print command of the browsingContext module creates a paginated representation of a document in a context as a PDF and returns it as a […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 23/09/2026

🦖 StorageAccessHandle: revokeObjectURL() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… None (undefined). #webdev

developer.mozilla.org

StorageAccessHandle: revokeObjectURL() method - Web APIs | MDN

None (undefined).

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randomMDN @randommdn.front-end.social.ap.brid.gy · 22/09/2026

🦖 :modal CSS pseudo-class ✅ Widely available (from Sept 2022) developer.mozilla.org/en-US/docs/We… The :modal CSS pseudo-class matches an element that is in a state in which it excludes all interaction with elements outside it until the interaction has […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 22/09/2026

🦖 sub: Wasm numeric instruction 🦖 developer.mozilla.org/en-US/docs/We… The sub numeric instruction, short for subtraction, is used for subtracting one number from another number, similar to the - operator in other languages. #webdev

developer.mozilla.org

sub: Wasm numeric instruction - WebAssembly | MDN

The sub numeric instruction, short for subtraction, is used for subtracting one number from another number, similar to the - operator in other languages.

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randomMDN @randommdn.front-end.social.ap.brid.gy · 21/09/2026

🦖 oklch() CSS function ✅ Widely available (from May 2023) developer.mozilla.org/en-US/docs/We… The oklch() functional notation expresses a given color in the Oklab color space. oklch() is the cylindrical form of oklab(), using the same L axis, but […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 21/09/2026

🦖 RTCIceTransport: selectedcandidatepairchange event ☑️ Newly available (from Aug 2026) developer.mozilla.org/en-US/docs/We… A selectedcandidatepairchange event is sent to an RTCIceTransport when the ICE agent selects a new pair of […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 20/09/2026

🦖 XREquirectLayer: space property 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The space property of the XREquirectLayer interface represents the layer's spatial relationship with the user's physical environment. #webdev

developer.mozilla.org

XREquirectLayer: space property - Web APIs | MDN

The space property of the XREquirectLayer interface represents the layer's spatial relationship with the user's physical environment.

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randomMDN @randommdn.front-end.social.ap.brid.gy · 20/09/2026

🦖 Date.prototype.getFullYear() ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The getFullYear() method of Date instances returns the year for this date according to local time. #webdev #JavaScript

developer.mozilla.org

Date.prototype.getFullYear() - JavaScript | MDN

The getFullYear() method of Date instances returns the year for this date according to local time.

randomMDN @randommdn.front-end.social.ap.brid.gy · 19/09/2026

🦖 MediaTrackSupportedConstraints: noiseSuppression property 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The MediaTrackSupportedConstraints dictionary's noiseSuppression property is a read-only Boolean value which is […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 19/09/2026

🦖 Date.prototype.setUTCHours() ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The setUTCHours() method of Date instances changes the hours, minutes, seconds, and/or milliseconds for this date according to […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 18/09/2026

🦖 HTMLScriptElement: referrerPolicy property ✅ Widely available (from Sept 2020) developer.mozilla.org/en-US/docs/We… The referrerPolicy property of the HTMLScriptElement interface reflects the HTML referrerpolicy of the <script> element, which […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 18/09/2026

🦖 WEBGL_draw_buffers: drawBuffersWEBGL() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The WEBGL_draw_buffers.drawBuffersWEBGL() method is part of the WebGL API and allows you to define the draw buffers to which all fragment […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 17/09/2026

🦖 DOMMatrixReadOnly: multiply() method ✅ Widely available (from Jan 2020) developer.mozilla.org/en-US/docs/We… The multiply() method of the DOMMatrixReadOnly interface creates and returns a new matrix which is the dot product of the matrix and the […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 17/09/2026

🦖 TypeError: can't assign to property "x" on "y": not an object 🦖 developer.mozilla.org/en-US/docs/We… The JavaScript strict mode exception "can't assign to property" occurs when attempting to create a property on primitive value such […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 16/09/2026

🦖 overflow-x CSS property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The overflow-x CSS property sets what shows when content overflows a block-level element's left and right edges. This may be nothing, a scroll bar, or […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 16/09/2026

🦖 Document: title property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The document.title property gets or sets the current title of the document. When present, it defaults to the value of the <title>. #webdev

developer.mozilla.org

Document: title property - Web APIs | MDN

The document.title property gets or sets the current title of the document. When present, it defaults to the value of the .

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randomMDN @randommdn.front-end.social.ap.brid.gy · 15/09/2026

🦖 Launch Handler API 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The Launch Handler API allows developers to control how a progressive web app (PWA) is launched — for example if it uses an existing window or creates a new one, and how the app's […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 15/09/2026

🦖 RTCEncodedVideoFrame: data property ✅ Widely available (from Aug 2023) developer.mozilla.org/en-US/docs/We… The data property of the RTCEncodedVideoFrame interface returns a buffer containing the frame data. #webdev

developer.mozilla.org

RTCEncodedVideoFrame: data property - Web APIs | MDN

The data property of the RTCEncodedVideoFrame interface returns a buffer containing the frame data.

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randomMDN @randommdn.front-end.social.ap.brid.gy · 14/09/2026

🦖 FontData: style property 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The style read-only property of the FontData interface returns the style of the font face. #webdev

developer.mozilla.org

FontData: style property - Web APIs | MDN

The style read-only property of the FontData interface returns the style of the font face.

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randomMDN @randommdn.front-end.social.ap.brid.gy · 14/09/2026

🦖 CSSTransformValue: values() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The values() method of the CSSTransformValue interface returns a new array iterator that yields each item in the object. #webdev

developer.mozilla.org

CSSTransformValue: values() method - Web APIs | MDN

The values() method of the CSSTransformValue interface returns a new array iterator that yields each item in the object.

randomMDN @randommdn.front-end.social.ap.brid.gy · 13/09/2026

🦖 TextTrackCueList: length property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The length read-only property of the TextTrackCueList interface returns the number of cues in the list. #webdev

developer.mozilla.org

TextTrackCueList: length property - Web APIs | MDN

The length read-only property of the TextTrackCueList interface returns the number of cues in the list.

randomMDN @randommdn.front-end.social.ap.brid.gy · 13/09/2026

🦖 Temporal.Instant.prototype.since() 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The since() method of Temporal.Instant instances returns a new Temporal.Duration object representing the duration from another […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 12/09/2026

🦖 SVGFEDiffuseLightingElement: height property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The height read-only property of the SVGFEDiffuseLightingElement interface describes the vertical size of an SVG filter […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 12/09/2026

🦖 PresentationConnection: close() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… When the close() method is called on a PresentationConnection, the user agent begins the process of closing the connection by sending an empty […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 11/09/2026

🦖 BatteryManager: dischargingtimechange event 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The dischargingtimechange event of the BatteryManager interface is fired when the battery dischargingTime property is updated. #webdev

developer.mozilla.org

BatteryManager: dischargingtimechange event - Web APIs | MDN

The dischargingtimechange event of the BatteryManager interface is fired when the battery dischargingTime property is updated.

randomMDN @randommdn.front-end.social.ap.brid.gy · 11/09/2026

🦖 Intl.ListFormat() constructor ✅ Widely available (from Apr 2021) developer.mozilla.org/en-US/docs/We… The Intl.ListFormat() constructor creates Intl.ListFormat objects. #webdev #JavaScript

developer.mozilla.org

Intl.ListFormat() constructor - JavaScript | MDN

The Intl.ListFormat() constructor creates Intl.ListFormat objects.