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  1. MediaStream Image Capture API - Web APIs | MDN

    The MediaStream Image Capture API is an API for capturing images or videos from a photographic device. In addition to capturing data, it also allows you to retrieve information about device capabilities such as image size, red-eye reduction and whether or not there is a flash and what they are currently set to. Conversely, the API allows the capabilities to be configured within the constraints what the device allows.... js navigator.mediaDevices.getUserMedia({...objects to select the one you need. js const track = mediaStream.getVideoTracks()[0];...

    developer.mozilla.org/en-US/docs/Web/API/MediaS...
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  2. WebTransportBidirectionalStream - Web APIs | MDN

    Learn about the WebTransportBidirectionalStream interface, including its properties, code examples, specifications, and browser compatibility.... js async function setUpBidirectional()...would read a ReadableStream : js async function readData(readable)...

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  3. Navigation - Web APIs | MDN

    Learn about the Navigation interface, including its properties and methods, code examples, specifications, and browser compatibility....and backwards in the history js async function backHandler()...a specific history entry js // On JS startup, get the key of the...

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  4. Named capturing group: (?<name>...) - JavaScrip...

    A named capturing group is a particular kind of capturing group that allows to give a name to the group. The group's matching result can later be identified by this name instead of by its index in the pattern.... js /(?<name>)(?<name>)/; // SyntaxError:...compatibility before using it. js /(?<year>\d{4})-\d{2}|\d{2}-(...

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  5. Window: messageerror event - Web APIs | MDN

    Learn about the messageerror event, including its type, syntax, and properties, code examples, specifications, and browser compatibility.... js addEventListener("messageerror"...messageerror using addEventListener() : js window.addEventListener("messageerror"...

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  6. HTMLMediaElement: stalled event - Web APIs | MDN

    Learn about the stalled event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("stalled", (event)...firing. Using addEventListener() : js const video = document.querySelector("video");...

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
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  7. TypeError: can't convert x to BigInt - JavaScri...

    The JavaScript exception "x can't be converted to BigInt" occurs when attempting to convert a Symbol, null, or undefined value to a BigInt, or if an operation expecting a BigInt parameter receives a number....Using BigInt() on invalid values js const a = BigInt(null); // TypeError:...convert Symbol("1") to BigInt js const a = BigInt(1); const b...

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  8. Window: beforeprint event - Web APIs | MDN

    Learn about the beforeprint event, including its type and syntax, code examples, specifications, and browser compatibility.... js addEventListener("beforeprint"...Examples Using addEventListener() : js window.addEventListener("beforeprint"...

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  9. Cross-browser audio basics - Web media technolo...

    This article provides:...the <audio> element like this: js const audio = document.getEl...from 5 seconds into the audio: js const audio = document.createElement("audio");...

    developer.mozilla.org/en-US/docs/Web/Media/Audi...
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  10. SyntaxError: getter and setter for private name...

    The JavaScript exception "mismatched placement" occurs when a private getter and setter are mismatched in whether or not they are static....Examples Mismatched placement js class Test { static set #foo(_)...must be either both static : js class Test { static set #foo(_)...

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