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https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API IndexedDB API - Web APIs | MDN IndexedDB is a low-level API for client-side storage of significant amounts of structured data, including files/blobs. This API uses indexes to enable... api web indexeddb apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API Canvas API - Web APIs | MDN canvas api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API Web APIs | MDN When writing code for the Web, there are a large number of Web APIs available. Below is a list of all the APIs and interfaces (object types) that you may be... web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API Service Worker API - Web APIs | MDN Service workers essentially act as proxy servers that sit between web applications, the browser, and the network (when available). They are intended, among... service worker api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage Window: localStorage property - Web APIs | MDN The localStorage read-only property of the window interface allows you to access a Storage object for the Document's origin; the stored data is saved across... web apis window localstorage property mdn https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch Using the Fetch API - Web APIs | MDN The Fetch API provides a JavaScript interface for making HTTP requests and processing the responses. the fetch api web apis using mdn https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API Intersection Observer API - Web APIs | MDN The Intersection Observer API provides a way to asynchronously observe changes in the intersection of a target element with an ancestor element or with a... intersection observer api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/classList Element: classList property - Web APIs | MDN The read-only classList property of the Element interface contains a live DOMTokenList collection representing the class attribute of the element. This can... web apis element classlist property mdn https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams URLSearchParams - Web APIs | MDN The URLSearchParams interface defines utility methods to work with the query string of a URL. web apis urlsearchparams mdn https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList DOMTokenList - Web APIs | MDN The DOMTokenList interface represents a set of space-separated tokens. Such a set is returned by Element.classList or HTMLLinkElement.relList, and many others. web apis domtokenlist mdn https://developer.mozilla.org/en-US/docs/Web/API/AbortController AbortController - Web APIs | MDN The AbortController interface represents a controller object that allows you to abort one or more Web requests as and when desired. web apis abortcontroller mdn https://developer.mozilla.org/en-US/docs/Web/API/Document_Object_Model Document Object Model (DOM) - Web APIs | MDN The Document Object Model (DOM) connects web pages to scripts or programming languages by representing the structure of a document—such as the HTML... document object model web apis dom mdn https://developer.mozilla.org/en-US/docs/Web/API/WebGPU_API WebGPU API - Web APIs | MDN The WebGPU API enables web developers to use the underlying system's GPU (Graphics Processing Unit) to carry out high-performance computations and draw complex... api web webgpu apis mdn https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/WebGL_best_practices WebGL best practices - Web APIs | MDN WebGL is a complicated API, and it's often not obvious what the recommended ways to use it are. This page tackles recommendations across the spectrum of... best practices web apis webgl mdn https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit_event HTMLFormElement: submit event - Web APIs | MDN submit event web apis htmlformelement mdn https://developer.mozilla.org/en-US/docs/Web/API/Gamepad_API Gamepad API - Web APIs | MDN The Gamepad API is a way for developers to access and respond to signals from gamepads and other game controllers in a simple, consistent way. It contains... gamepad api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/EventSource EventSource - Web APIs | MDN The EventSource interface is web content's interface to server-sent events. web apis eventsource mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/moveBefore Element: moveBefore() method - Web APIs | MDN The moveBefore() method of the Element interface moves a given Node inside the invoking node as a direct child, before a given reference node. web apis element method mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/closest Element: closest() method - Web APIs | MDN The closest() method of the Element interface traverses the element and its parents (heading toward the document root) until it finds a node that matches the... web apis element closest method mdn https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events Using server-sent events - Web APIs | MDN Developing a web application that uses server-sent events is straightforward. You'll need a bit of code on the server to stream events to the front-end, but... server sent events web apis using mdn https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver ResizeObserver - Web APIs | MDN The ResizeObserver interface reports changes to the dimensions of an Element's content or border box, or the bounding box of an SVGElement. web apis resizeobserver mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event Element: click event - Web APIs | MDN An element receives a click event when any of the following occurs: click event web apis element mdn https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events Server-sent events - Web APIs | MDN Traditionally, a web page has to send a request to the server to receive new data; that is, the page requests data from the server. With server-sent events,... server sent events web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API WebRTC API - Web APIs | MDN WebRTC (Web Real-Time Communication) is a technology that enables Web applications and sites to capture and optionally stream audio and/or video media, as well... webrtc api apis mdn https://developer.mozilla.org/en-US/docs/Web/API/File File - Web APIs | MDN The File interface provides information about files and allows JavaScript in a web page to access their content. web apis file mdn https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker ServiceWorker - Web APIs | MDN The ServiceWorker interface of the Service Worker API provides a reference to a service worker. Multiple browsing contexts (e.g., pages, workers, etc.) can be... web apis serviceworker mdn https://developer.mozilla.org/en-US/docs/Web/API/Worker/postMessage Worker: postMessage() method - Web APIs | MDN The postMessage() method of the Worker interface sends a message to the worker. The first parameter is the data to send to the worker. The data may be any... web apis worker postmessage method mdn https://developer.mozilla.org/en-US/docs/Web/API/View_Transition_API View Transition API - Web APIs | MDN The View Transition API provides a mechanism for easily creating animated transitions between different website views. This includes animating between DOM... view transition api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelector Element: querySelector() method - Web APIs | MDN The querySelector() method of the Element interface returns the first element that is a descendant of the element on which it is invoked that matches the... web apis element queryselector method mdn https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector Document: querySelector() method - Web APIs | MDN The Document method querySelector() returns the first Element within the document that matches the specified CSS selector, or group of CSS selectors. If no... web apis document queryselector method mdn https://developer.mozilla.org/en-US/docs/Web/API/URL_Pattern_API URL Pattern API - Web APIs | MDN The URL Pattern API defines a syntax that is used to create URL pattern matchers. These patterns can be matched against URLs or individual URL components. api web url pattern apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/querySelectorAll Element: querySelectorAll() method - Web APIs | MDN The Element method querySelectorAll() returns a static (not live) NodeList representing a list of elements matching the specified group of selectors which are... web apis element queryselectorall method mdn https://developer.mozilla.org/en-US/docs/Web/API/Document/cookie Document: cookie property - Web APIs | MDN The Document property cookie lets you read and write cookies associated with the document. It serves as a getter and setter for the actual values of the... web apis document cookie property mdn https://developer.mozilla.org/en-US/docs/Web/API/Geolocation_API Geolocation API - Web APIs | MDN The Geolocation API allows the user to provide their location to web applications if they so desire. For privacy reasons, the user is asked for permission to... geolocation api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Node Node - Web APIs | MDN The DOM Node interface is an abstract base class upon which many other DOM API objects are based, thus letting those object types be used similarly and often... web apis node mdn https://developer.mozilla.org/en-US/docs/Web/API/Window/requestAnimationFrame Window: requestAnimationFrame() method - Web APIs | MDN The window.requestAnimationFrame() method tells the browser you wish to perform an animation. It requests the browser to call a user-supplied callback function... web apis window requestanimationframe method mdn https://developer.mozilla.org/en-US/docs/Web/API/EyeDropper EyeDropper - Web APIs | MDN The EyeDropper interface represents an instance of an eyedropper tool that can be opened and used by the user to select colors from the screen. web apis eyedropper mdn https://developer.mozilla.org/en-US/docs/Web/API/Blob Blob - Web APIs | MDN The Blob interface represents a blob, which is a file-like object of immutable, raw data; they can be read as text or binary data, or converted into a... web apis blob mdn https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D CanvasRenderingContext2D - Web APIs | MDN web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/FileReader FileReader - Web APIs | MDN The FileReader interface lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or... web apis filereader mdn https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API WebGL: 2D and 3D graphics for the web - Web APIs | MDN for the web apis webgl graphics mdn https://developer.mozilla.org/de/docs/Web/API/Event/preventDefault Event: preventDefault()-Methode - Web-APIs | MDN Die preventDefault()-Methode des Event-Interfaces teilt dem User-Agent mit, dass das Ereignis explizit behandelt wird, sodass die Standardaktion, wie z.B. das... web apis event methode mdn https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream/pipeTo ReadableStream: pipeTo() method - Web APIs | MDN The pipeTo() method of the ReadableStream interface pipes the current ReadableStream to a given WritableStream and returns a Promise that fulfills when the... web apis readablestream method mdn https://developer.mozilla.org/en-US/docs/Web/API/DecompressionStream/writable DecompressionStream: writable property - Web APIs | MDN The writable read-only property of the DecompressionStream interface returns a WritableStream that accepts compressed data to be decompressed, in the form of... web apis decompressionstream writable property mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSMathClamp CSSMathClamp - Web APIs | MDN The CSSMathClamp interface of the CSS Typed Object Model API represents the CSS clamp() function. It inherits properties and methods from its parent... web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/CharacterData/after CharacterData: after() method - Web APIs | MDN The after() method of the CharacterData interface inserts a set of Node objects or strings in the children list of the object's parent, just after the object... after method web apis characterdata mdn https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/nonce HTMLElement: nonce property - Web APIs | MDN The nonce property of the HTMLElement interface returns the cryptographic number used once that is used by Content Security Policy to determine whether a given... web apis htmlelement nonce property mdn https://developer.mozilla.org/en-US/docs/Web/API/DocumentFragment/append DocumentFragment: append() method - Web APIs | MDN The DocumentFragment.append() method inserts a set of Node objects or strings after the last child of the document fragment. Strings are inserted as equivalent... web apis documentfragment append method mdn https://developer.mozilla.org/en-US/docs/Web/API/PromiseRejectionEvent/reason PromiseRejectionEvent: reason property - Web APIs | MDN The PromiseRejectionEvent reason read-only property is any JavaScript value or Object which provides the reason passed into Promise.reject(). This in theory... web apis promiserejectionevent reason property mdn https://developer.mozilla.org/en-US/docs/Web/API/ReadableByteStreamController/close ReadableByteStreamController: close() method - Web APIs | MDN The close() method of the ReadableByteStreamController interface closes the associated stream. web apis readablebytestreamcontroller close method mdn https://developer.mozilla.org/en-US/docs/Web/API/RTCOutboundRtpStreamStats/mid RTCOutboundRtpStreamStats: mid property - Web APIs | MDN The mid property of the RTCOutboundRtpStreamStats dictionary is a string that contains the media ID negotiated between the local and remote peers. This... web apis mid property mdn https://developer.mozilla.org/en-US/docs/Web/API/Range/setEndBefore Range: setEndBefore() method - Web APIs | MDN The Range.setEndBefore() method sets the end position of a Range relative to another Node. The parent Node of end of the Range will be the same as that for the... web apis range method mdn https://developer.mozilla.org/de/docs/Web/API/SVGStringList/clear SVGStringList: clear() Methode - Web-APIs | MDN Die clear() Methode der SVGStringList Schnittstelle entfernt alle vorhandenen Elemente aus der Liste, sodass das Ergebnis eine leere Liste ist. web apis clear methode mdn https://developer.mozilla.org/en-US/docs/Web/API/ValidityState/rangeOverflow ValidityState: rangeOverflow property - Web APIs | MDN web apis property mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSUnitValue/value CSSUnitValue: value property - Web APIs | MDN The CSSUnitValue.value property of the CSSUnitValue interface returns a double indicating the number of units. web apis cssunitvalue property mdn https://developer.mozilla.org/en-US/docs/Web/API/Range/isPointInRange Range: isPointInRange() method - Web APIs | MDN The isPointInRange() method of the Range interface determines whether a specified point is within the Range. The point is specified by a reference node and an... web apis range method mdn https://developer.mozilla.org/en-US/docs/Web/API/Window/matchMedia Window: matchMedia() method - Web APIs | MDN The Window interface's matchMedia() method returns a new MediaQueryList object that can then be used to determine if the document matches the media query... web apis window matchmedia method mdn https://developer.mozilla.org/en-US/docs/Web/API/WebUSB_API WebUSB API - Web APIs | MDN The WebUSB API provides a way to expose non-standard Universal Serial Bus (USB) compatible devices services to the web, to make USB safer and easier to use. api web webusb apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Document/documentURI Document: documentURI property - Web APIs | MDN The documentURI read-only property of the Document interface returns the document location as a string. web apis document property mdn https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString DOMParser: parseFromString() method - Web APIs | MDN The parseFromString() method of the DOMParser interface parses an input containing either HTML or XML, returning a Document with the type given in the... web apis domparser method mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSNumericValue/type CSSNumericValue: type() method - Web APIs | MDN The type() method of the CSSNumericValue interface returns the type of CSSNumericValue, one of angle, flex, frequency, length, resolution, percent,... web apis cssnumericvalue type method mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet CSSStyleSheet - Web APIs | MDN The CSSStyleSheet interface represents a single CSS stylesheet, and lets you inspect and modify the list of rules contained in the stylesheet. It inherits... web apis cssstylesheet mdn https://developer.mozilla.org/en-US/docs/Web/API/PaymentRequestEvent/modifiers PaymentRequestEvent: modifiers property - Web APIs | MDN The modifiers read-only property of the PaymentRequestEvent interface returns an Array of PaymentDetailsModifier objects containing modifiers for payment... web apis modifiers property mdn https://developer.mozilla.org/en-US/docs/Web/API/Window/beforeunload_event Window: beforeunload event - Web APIs | MDN The beforeunload event is fired when the current window, contained document, and associated resources are about to be unloaded. The document is still visible... web apis window beforeunload event mdn https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/URLSearchParams URLSearchParams: URLSearchParams() constructor - Web APIs | MDN The URLSearchParams() constructor creates and returns a new URLSearchParams object. constructor web urlsearchparams apis mdn https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/x MouseEvent: x property - Web APIs | MDN The MouseEvent.x property is an alias for the MouseEvent.clientX property. web apis mouseevent x property mdn https://developer.mozilla.org/en-US/docs/Web/API/Cache/put Cache: put() method - Web APIs | MDN The put() method of the Cache interface allows key/value pairs to be added to the current Cache object. web apis cache put method mdn https://developer.mozilla.org/en-US/docs/Web/API/WritableStream/WritableStream WritableStream: WritableStream() constructor - Web APIs | MDN The WritableStream() constructor creates a new WritableStream object instance. constructor web writablestream apis mdn https://developer.mozilla.org/en-US/docs/Web/API/GPUCommandEncoder/beginComputePass GPUCommandEncoder: beginComputePass() method - Web APIs | MDN The beginComputePass() method of the GPUCommandEncoder interface starts encoding a compute pass, returning a GPUComputePassEncoder that can be used to control... web apis method mdn https://developer.mozilla.org/en-US/docs/Web/API/MessageEvent/origin MessageEvent: origin property - Web APIs | MDN The origin read-only property of the MessageEvent interface is a string representing the origin of the message emitter. web apis messageevent origin property mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByClassName Element: getElementsByClassName() method - Web APIs | MDN The Element method getElementsByClassName() returns a live HTMLCollection which contains every descendant element which has the specified class name or names. web apis element method mdn https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/coneOuterAngle PannerNode: coneOuterAngle property - Web APIs | MDN The coneOuterAngle property of the PannerNode interface is a double value describing the angle, in degrees, of a cone outside of which the volume will be... web apis property mdn https://developer.mozilla.org/en-US/docs/Web/API/Node/isEqualNode Node: isEqualNode() method - Web APIs | MDN The isEqualNode() method of the Node interface tests whether two nodes are equal. Two nodes are equal when they have the same type, defining characteristics... web apis node method mdn https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/generateKey SubtleCrypto: generateKey() method - Web APIs | MDN The generateKey() method of the SubtleCrypto interface is used to generate a new key (for symmetric algorithms) or key pair (for public-key algorithms). web apis subtlecrypto method mdn https://developer.mozilla.org/en-US/docs/Web/API/Request/referrerPolicy Request: referrerPolicy property - Web APIs | MDN The referrerPolicy read-only property of the Request interface returns the referrer policy, which governs what referrer information, sent in the Referer... web apis request referrerpolicy property mdn https://developer.mozilla.org/en-US/docs/Web/API/ToggleEvent/ToggleEvent ToggleEvent: ToggleEvent() constructor - Web APIs | MDN The ToggleEvent() constructor creates a new ToggleEvent object. constructor web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/Element/after Element: after() method - Web APIs | MDN The Element.after() method inserts a set of Node objects or strings in the children list of the Element's parent, just after the Element. Strings are inserted... after method web apis element mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSVariableReferenceValue/fallback CSSVariableReferenceValue: fallback property - Web APIs | MDN The fallback read-only property of the CSSVariableReferenceValue interface returns the custom property fallback value of the CSSVariableReferenceValue. web apis cssvariablereferencevalue fallback property mdn https://developer.mozilla.org/en-US/docs/Web/API/File/name File: name property - Web APIs | MDN The name read-only property of the File interface returns the name of the file represented by a File object. For security reasons, the path is excluded from... file name web apis property mdn https://developer.mozilla.org/en-US/docs/Web/API/XRFrame/session XRFrame: session property - Web APIs | MDN An XRFrame object's read-only session property returns the XRSession object that generated the frame. web apis session property mdn https://developer.mozilla.org/en-US/docs/Web/API/CacheStorage/keys CacheStorage: keys() method - Web APIs | MDN The keys() method of the CacheStorage interface returns a Promise that will resolve with an array containing strings corresponding to all of the named Cache... web apis cachestorage keys method mdn https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsArrayBuffer FileReader: readAsArrayBuffer() method - Web APIs | MDN The readAsArrayBuffer() method of the FileReader interface is used to start reading the contents of a specified Blob or File. When the read operation is... web apis filereader method mdn https://developer.mozilla.org/en-US/docs/Web/API/Response/json Response: json() method - Web APIs | MDN The json() method of the Response interface takes a Response stream and reads it to completion. It returns a promise which resolves with the result of parsing... web apis response json method mdn https://developer.mozilla.org/de/docs/Web/API/WebGLRenderingContext/useProgram WebGLRenderingContext: useProgram() Methode - Web-APIs | MDN Die WebGLRenderingContext.useProgram() Methode der WebGL API setzt das angegebene WebGLProgram als Teil des aktuellen Rendering-Zustands. web apis methode mdn https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/replace DOMTokenList: replace() method - Web APIs | MDN The replace() method of the DOMTokenList interface replaces an existing token with a new token. If the first token doesn't exist, replace() returns false... web apis domtokenlist replace method mdn https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter/desiredSize WritableStreamDefaultWriter: desiredSize property - Web APIs | MDN The desiredSize read-only property of the WritableStreamDefaultWriter interface returns the desired size required to fill the stream's internal queue. web apis writablestreamdefaultwriter desiredsize property mdn https://developer.mozilla.org/en-US/docs/Web/API/Window/structuredClone Window: structuredClone() method - Web APIs | MDN The structuredClone() method of the Window interface creates a deep clone of a value using the structured clone algorithm. web apis window structuredclone method mdn https://developer.mozilla.org/en-US/docs/Web/API/CSSVariableReferenceValue/CSSVariableReferenceValue CSSVariableReferenceValue: CSSVariableReferenceValue() constructor - Web APIs | MDN Creates a new CSSVariableReferenceValue. constructor web cssvariablereferencevalue apis mdn https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/texImage3D WebGL2RenderingContext: texImage3D() method - Web APIs | MDN The texImage3D() method of the WebGL2RenderingContext interface of the WebGL API specifies a three-dimensional texture image. web apis method mdn https://developer.mozilla.org/en-US/docs/Web/API/ImageCapture/ImageCapture ImageCapture: ImageCapture() constructor - Web APIs | MDN The ImageCapture() constructor creates a new ImageCapture object. constructor web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/RTCDataChannel/close RTCDataChannel: close() method - Web APIs | MDN The RTCDataChannel.close() method closes the RTCDataChannel. Either peer is permitted to call this method to initiate closure of the channel. web apis close method mdn https://developer.mozilla.org/en-US/docs/Web/API/Node/isConnected Node: isConnected property - Web APIs | MDN The read-only isConnected property of the Node interface returns a boolean indicating whether the node is connected (directly or indirectly) to a Document... web apis node isconnected property mdn https://developer.mozilla.org/en-US/docs/Web/API/Worker/Worker Worker: Worker() constructor - Web APIs | MDN The Worker() constructor creates a Worker object that executes the classic script or module at the specified URL. constructor web worker apis mdn https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/createQuery WebGL2RenderingContext: createQuery() method - Web APIs | MDN The WebGL2RenderingContext.createQuery() method of the WebGL 2 API creates and initializes WebGLQuery objects, which provide ways to asynchronously query for... web apis method mdn https://developer.mozilla.org/en-US/docs/Web/API/TextDecoder/encoding TextDecoder: encoding property - Web APIs | MDN The TextDecoder.encoding read-only property returns a string containing the name of the character encoding that this decoder will use. web apis textdecoder encoding property mdn https://developer.mozilla.org/en-US/docs/Web/API/Location/reload Location: reload() method - Web APIs | MDN The reload() method of the Location interface reloads the current URL, like the Refresh button. web apis location reload method mdn https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/x HTMLImageElement: x property - Web APIs | MDN web apis htmlimageelement x property mdn https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API Media Source API - Web APIs | MDN media source api web apis mdn https://developer.mozilla.org/en-US/docs/Web/API/CSPViolationReport/sample CSPViolationReport: sample property - Web APIs | MDN The sample property of the CSPViolationReport dictionary is a string that contains a part of the resource that violated the Content Security Policy (CSP). web apis sample property mdn https://developer.mozilla.org/en-US/docs/Web/API/StylePropertyMap/set StylePropertyMap: set() method - Web APIs | MDN The set() method of the StylePropertyMap interface changes the CSS declaration with the given property. web apis stylepropertymap set method mdn