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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 · 11h

🦖 TextTrackList: getTrackById() method ✅ Widely available (from Oct 2018) developer.mozilla.org/en-US/docs/We… The TextTrackList method getTrackById() returns the first TextTrack object from the track list whose id matches the specified string. This lets […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 20h

🦖 WebGL2RenderingContext: isSampler() method ✅ Widely available (from Sept 2021) developer.mozilla.org/en-US/docs/We… The WebGL2RenderingContext.isSampler() method of the WebGL 2 API returns true if the passed object is a valid WebGLSampler object […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 16/10/2026

🦖 CSSMathMax 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The CSSMathMax interface of the CSS Typed Object Model API represents the CSS max() function. #webdev

developer.mozilla.org

CSSMathMax - Web APIs | MDN

The CSSMathMax interface of the CSS Typed Object Model API represents the CSS max() function.

randomMDN @randommdn.front-end.social.ap.brid.gy · 16/10/2026

🦖 Session management 🦖 developer.mozilla.org/en-US/docs/We… HTTP is commonly called a stateless protocol, meaning that it provides no built-in mechanism to correlate a series of individual HTTP requests. This is a problem for websites that […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 15/10/2026

🦖 GPUTexture: height property 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The height read-only property of the GPUTexture interface represents the height of the GPUTexture. #webdev

developer.mozilla.org

GPUTexture: height property - Web APIs | MDN

The height read-only property of the GPUTexture interface represents the height of the GPUTexture.

randomMDN @randommdn.front-end.social.ap.brid.gy · 15/10/2026

🦖 ProcessingInstruction: toggleAttribute() method 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The toggleAttribute() method of the ProcessingInstruction interface toggles a boolean attribute on the given processing instruction […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 14/10/2026

🦖 SyntaxError: negated character class with strings in regular expression 🦖 developer.mozilla.org/en-US/docs/We… The JavaScript exception "negated character class with strings in regular expression" occurs when a v-mode […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 14/10/2026

🦖 NDEFRecord 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The NDEFRecord interface of the Web NFC API provides data that can be read from, or written to, compatible NFC devices, e.g., NFC tags supporting NDEF. #webdev

developer.mozilla.org

NDEFRecord - Web APIs | MDN

The NDEFRecord interface of the Web NFC API provides data that can be read from, or written to, compatible NFC devices, e.g., NFC tags supporting NDEF.

randomMDN @randommdn.front-end.social.ap.brid.gy · 13/10/2026

🦖 MediaStreamTrackGenerator: MediaStreamTrackGenerator() constructor 🦖 developer.mozilla.org/en-US/docs/We… The MediaStreamTrackGenerator() constructor creates a new MediaStreamTrackGenerator object which consumes a stream of […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 13/10/2026

🦖 XMLHttpRequest: XMLHttpRequest() constructor ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The XMLHttpRequest() constructor creates a new XMLHttpRequest. #webdev

developer.mozilla.org

XMLHttpRequest: XMLHttpRequest() constructor - Web APIs | MDN

The XMLHttpRequest() constructor creates a new XMLHttpRequest.

randomMDN @randommdn.front-end.social.ap.brid.gy · 12/10/2026

🦖 PeriodicWave: PeriodicWave() constructor ✅ Widely available (from Apr 2021) developer.mozilla.org/en-US/docs/We… The PeriodicWave() constructor of the Web Audio API creates a new PeriodicWave object instance. #webdev

developer.mozilla.org

PeriodicWave: PeriodicWave() constructor - Web APIs | MDN

The PeriodicWave() constructor of the Web Audio API creates a new PeriodicWave object instance.

randomMDN @randommdn.front-end.social.ap.brid.gy · 12/10/2026

🦖 MathMLElement: focus() method ✅ Widely available (from Jan 2023) developer.mozilla.org/en-US/docs/We… The focus() method of the MathMLElement interface sets focus on the specified MathML element, if it can be focused. The focused element is the element that […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 11/10/2026

🦖 ARIA: aria-rowcount attribute 🦖 developer.mozilla.org/en-US/docs/We… The aria-rowcount attribute defines the total number of rows in a table, grid, or treegrid. #webdev #Accessibility

developer.mozilla.org

ARIA: aria-rowcount attribute - ARIA | MDN

The aria-rowcount attribute defines the total number of rows in a table, grid, or treegrid.

randomMDN @randommdn.front-end.social.ap.brid.gy · 11/10/2026

🦖 RTCInboundRtpStreamStats: headerBytesReceived property ✅ Widely available (from Oct 2022) developer.mozilla.org/en-US/docs/We… The headerBytesReceived property of the RTCInboundRtpStreamStats dictionary indicates the total number of […]

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

🦖 Using the Web Speech API 🦖 developer.mozilla.org/en-US/docs/We… The Web Speech API provides two distinct areas of functionality — speech recognition and speech synthesis (also known as text to speech, or TTS) — which open up interesting […]

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

🦖 The arguments object ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… arguments is an array-like object accessible inside functions that contains the values of the arguments passed to that function. #webdev #JavaScript

developer.mozilla.org

The arguments object - JavaScript | MDN

arguments is an array-like object accessible inside functions that contains the values of the arguments passed to that function.

randomMDN @randommdn.front-end.social.ap.brid.gy · 09/10/2026

🦖 CSSScopeRule ☑️ Newly available (from Dec 2025) developer.mozilla.org/en-US/docs/We… The CSSScopeRule interface of the CSS Object Model represents a CSS @scope at-rule. #webdev

developer.mozilla.org

CSSScopeRule - Web APIs | MDN

The CSSScopeRule interface of the CSS Object Model represents a CSS @scope at-rule.

randomMDN @randommdn.front-end.social.ap.brid.gy · 09/10/2026

🦖 TypedArray.prototype.fill() ✅ Widely available (from Sept 2016) developer.mozilla.org/en-US/docs/We… The fill() method of TypedArray instances changes all elements within a range of indices in a typed array to a static value. It […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 08/10/2026

🦖 Window: vrdisplaydisconnect event 🟧 Limited availability developer.mozilla.org/en-US/docs/We… The vrdisplaydisconnect event of the WebVR API is fired when a compatible VR display is disconnected from the computer. #webdev

developer.mozilla.org

Window: vrdisplaydisconnect event - Web APIs | MDN

The vrdisplaydisconnect event of the WebVR API is fired when a compatible VR display is disconnected from the computer.

randomMDN @randommdn.front-end.social.ap.brid.gy · 08/10/2026

🦖 SVGElement: nonce property ✅ Widely available (from Mar 2022) developer.mozilla.org/en-US/docs/We… The nonce property of the SVGElement interface returns the nonce that is used by Content Security Policy to determine whether a given fetch will be allowed to […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 07/10/2026

🦖 <stop> ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The <stop> SVG element defines a color and its position to use on a gradient. This element is always a child of a <linearGradient> or <radialGradient> element. #webdev #SVG

developer.mozilla.org

<stop> - SVG | MDN

The SVG element defines a color and its position to use on a gradient. This element is always a child of a or element.

randomMDN @randommdn.front-end.social.ap.brid.gy · 07/10/2026

🦖 ValidityState: valueMissing property ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The read-only valueMissing property of the ValidityState interface indicates if a required control, such as an <input>, <select>, or <textarea> […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 06/10/2026

🦖 PublicKeyCredential: id property 🦖 developer.mozilla.org/en-US/docs/We… The id read-only property of the PublicKeyCredential interface is a string, inherited from Credential, which represents the identifier of the current PublicKeyCredential instance. #webdev

developer.mozilla.org

PublicKeyCredential: id property - Web APIs | MDN

The id read-only property of the PublicKeyCredential interface is a string, inherited from Credential, which represents the identifier of the current PublicKeyCredential instance.

randomMDN @randommdn.front-end.social.ap.brid.gy · 06/10/2026

🦖 do...while ✅ Widely available (from Jul 2015) developer.mozilla.org/en-US/docs/We… The do...while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated after […]

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randomMDN @randommdn.front-end.social.ap.brid.gy · 05/10/2026

🦖 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 · 05/10/2026

🦖 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).