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  1. Ember interactivity: Events, classes and state ...

    OK, so that's great progress for now. We can now add todo items to our app, and the state of the data is tracked using our service. Next we'll move on to getting our footer functionality working, including the todo counter, and look at conditional rendering, including correctly styling todos when they've been checked. We'll also wire up our "Clear completed" button....js : js import Component from "@glimmer/component";...the content to the following: js import Component from "@glimmer/component";...

    developer.mozilla.org/en-US/docs/Learn/Tools_an...
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  2. Static method - MDN Web Docs Glossary: Definiti...

    A static method (or static function) is a method defined as a member of an object but is accessible directly from an API object's constructor, rather than from an object instance created via the constructor....itself — it is a static method: js let promise = Notification.requestPermission();...system notification it represents: js let myNotification = new Notification("This...

    developer.mozilla.org/en-US/docs/Glossary/Stati...
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  3. RangeError: BigInt division by zero - JavaScrip...

    The JavaScript exception "BigInt division by zero" occurs when a BigInt is divided by 0n.... Examples Division by 0n js const a = 1n; const b = 0n; const...like Infinity or undefined . js const a = 1n; const b = 0n; const...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  4. Truthy - MDN Web Docs Glossary: Definitions of ...

    In JavaScript, a truthy value is a value that is considered true when encountered in a Boolean context. All values are truthy unless they are defined as falsy. That is, all values are truthy except false, 0, -0, 0n, "", null, undefined, NaN, and document.all....and thus execute the if block): js if (true) if ({}) if ([]) if...operator returns the second operand: js true && "dog" // returns "dog"...

    developer.mozilla.org/en-US/docs/Glossary/Truthy
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  5. Argument - MDN Web Docs Glossary: Definitions o...

    Arguments are values (primitive or object) passed as input to a function. Do not confuse arguments with parameters, which are the names used in the function definition to refer to the arguments.... For example: js const argument1 = "Web"; const...order in the function definition. js const argument1 = "foo"; const...

    developer.mozilla.org/en-US/docs/Glossary/Argument
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  6. HTMLMediaElement: timeupdate event - Web APIs |...

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

    developer.mozilla.org/en-US/docs/Web/API/HTMLMe...
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  7. PeriodicSyncManager - Web APIs | MDN

    Learn about the PeriodicSyncManager interface, including its properties and methods, code examples, specifications, and browser compatibility....day from a browsing context: js async function registerPeriodicNews()...with a given tag is registered. js navigator.serviceWorker.ready...

    developer.mozilla.org/en-US/docs/Web/API/Period...
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  8. Compression Streams API - Web APIs | MDN

    The Compression Streams API provides a JavaScript API for compressing and decompressing streams of data using the gzip or deflate formats.... js const compressedReadableSt =...decompresses a blob using gzip. js async function DecompressBlob(blob)...

    developer.mozilla.org/en-US/docs/Web/API/Compre...
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  9. SyntaxError: invalid character in class in regu...

    The JavaScript exception "invalid character in class in regular expression" occurs when a character appears in a v-mode character class but it's not allowed to appear literally....Examples Invalid cases js /[(){}]/v; Valid cases js /[\(\)\{\}v; See...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  10. SyntaxError: missing ] after element list - Jav...

    The JavaScript exception "missing ] after element list" occurs when there is an error with the array initializer syntax somewhere. Likely there is a closing square bracket (]) or a comma (,) missing....Incomplete array initializer js const list = [1, 2, const instruments...bar: "foo" }]; Correct would be: js const list = [1, 2]; const instruments...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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