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  1. <input type="color"> - HTML: HyperText Markup L...

    elements of type color provide a user interface element that lets a user specify a color, either by using a visual color picker interface or by entering the color into a text field in #rrggbb hexadecimal format....over time to the color value: js colorPicker.addEventListener("input"...appropriately in either case. js colorPicker.select(); Validation...

    developer.mozilla.org/en-US/docs/Web/HTML/Eleme...
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  2. <input type="color"> - HTML (HyperText Markup L...

    Les éléments de type "color" permettent de sélectionner une couleur via une interface (un sélecteur de couleur) ou en saisissant le code hexadécimal de la couleur au format "#rrggbb". Ce format de valeur peut être utilisé en CSS.... js colorPicker.addEventListener("input"...d'adapter votre code à ce cas. js colorWell.select(); Validation...

    developer.mozilla.org/fr/docs/Web/HTML/Element/...
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  3. Registering attribution sources - Web APIs | MDN

    This article explains how to register attribution sources when using the Attribution Reporting API....trigger is matched to a source: js res.set( "Attribution-Report...generating an event-level report. js res.set( "Attribution-Report...

    developer.mozilla.org/en-US/docs/Web/API/Attrib...
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  4. File System API - Web APIs | MDN

    The File System API — with extensions provided via the File System Access API to access files on the device file system — allows read, write and file management capabilities.... js async function getFile() { //...method to retrieve the contents. js const pickerOpts = { types: [...

    developer.mozilla.org/en-US/docs/Web/API/File_S...
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  5. Client-side storage - Learn web development | MDN

    That's it for now. We hope you've found our rundown of client-side storage technologies useful....): js localStorage.setItem("name",...into your JavaScript console: js let myName = localStorage.getItem("name");...

    developer.mozilla.org/en-US/docs/Learn/JavaScri...
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  6. TypeError: can't assign to property "x" on "y":...

    The JavaScript strict mode exception "can't assign to property" occurs when attempting to create a property on primitive value such as a symbol, a string, a number or a boolean. Primitive values cannot hold any property.... Examples Invalid cases js "use strict"; const foo = "my...the object equivalent Object . js "use strict"; const foo = new...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  7. NavigationCurrentEntryChangeEvent - Web APIs | MDN

    Learn about the NavigationCurrentEntryChangeEvent interface, including its constructor and properties, code examples, specifications, and browser compatibility....Examples Navigation data reporting: js navigation.addEventListener(...Setting up a per-entry event: js navigation.addEventListener(...

    developer.mozilla.org/en-US/docs/Web/API/Naviga...
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  8. ReferenceError - JavaScript | MDN

    The ReferenceError object represents an error when a variable that doesn't exist (or hasn't yet been initialized) in the current scope is referenced....Examples Catching a ReferenceError js try { let a = undefinedVariable;...error } Creating a ReferenceError js try { throw new ReferenceError("Hello");...

    developer.mozilla.org/en-US/docs/Web/JavaScript...
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  9. Contact Picker API - Web APIs | MDN

    The Contact Picker API allows users to select entries from their contact list and share limited details of the selected entries with a website or application.... js const supported = "contacts"...check for supported properties. js async function checkProperties()...

    developer.mozilla.org/en-US/docs/Web/API/Contac...
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  10. Background Synchronization API - Web APIs | MDN

    The Background Synchronization API enables a web app to defer tasks so that they can be run in a service worker once the user has a stable network connection....sync from a browsing context: js async function syncMessagesLater()...with a given tag is registered. js navigator.serviceWorker.ready...

    developer.mozilla.org/en-US/docs/Web/API/Backgr...
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