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  1. TypeError: cyclic object value - JavaScript | MDN

    The JavaScript exception "cyclic object value" occurs when object references were found in JsON. JsON.stringify() doesn't try to solve them and fails accordingly....structure like the following js const circularReference = { otherData:...circularReference; JSON.stringify() will fail js JSON.stringify(circularReference);...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  2. ReferenceError: can't access lexical declaratio...

    The JavaScript exception "can't access lexical declaration 'X' before initialization" occurs when a lexical variable was accessed before it was initialized. This happens within any scope (global, module, function, or block) when let or const variables are accessed before the place where they are declared is executed.... js function test() { // Accessing... because the evaluation of a.js is blocked by the evaluation...

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  3. AggregateError - JavaScript | MDN

    The AggregateError object represents an error when several errors need to be wrapped in a single error. It is thrown when multiple errors need to be reported by an operation, for example by Promise.any(), when all promises passed to it reject....Examples Catching an AggregateError js Promise.any([Promise.reject(new...}); Creating an AggregateError js try { throw new AggregateError([new...

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  4. PaintWorkletGlobalScope - Web APIs | MDN

    Learn about the PaintWorkletGlobalScope interface, including its properties and methods, code examples, specifications, and browser compatibility....This should be in a separate js file. Note that registerPaint()...reference to a paint Worklet . js class CheckerboardPainter { paint(ctx...

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  5. URL - Web APIs | MDN

    Learn about the URL interface, including its constructor, properties, and methods, specifications and browser compatibility....parameter is a relative URL: js const url = new URL("../cats"...first check the URL is valid: js if (URL.canParse("../cats", "http://www...

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  6. String: length - JavaScript | MDN

    The length data property of a String value contains the length of the string in UTF-16 code units....when you load the data into a JS string, the encoding always becomes...the size of the source file. js const str1 = "a".repeat(2 **...

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  7. import.meta - JavaScript | MDN

    The import.meta meta-property exposes context-specific metadata to a JavaScript module. It contains information about the module, such as the module's URL.... Syntax js import.meta Value The import...(for inline scripts). In Node.js, this is the file path (including...

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  8. Event: preventDefault() method - Web APIs | MDN

    Learn about the Event.preventDefault() method, including its syntax, code examples, specifications, and browser compatibility.... Syntax js event.preventDefault() Examples...that from happening: JavaScript js const checkbox = document.qu...

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  9. HTMLMediaElement: ratechange event - Web APIs |...

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

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
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  10. HTMLMediaElement: suspend event - Web APIs | MDN

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

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