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  1. Vue conditional rendering: editing existing tod...

    This article has been fairly intense, and we covered a lot here. We've now got edit and delete functionality in our app, which is fairly exciting. We are nearing the end of our Vue series now. The last bit of functionality to look at is focus management, or put another way, how we can improve our app's keyboard accessibility....your existing isDone data point: js data() { return { isDone: this...right below your data() property: js methods: { deleteToDo() { this...

    developer.mozilla.org/en-US/docs/Learn/Tools_an...
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  2. JavaScript performance optimization - Learn web...

    It is very important to consider how you are using JavaScript on your websites and think about how to mitigate any performance issues that it might be causing. While images and video account for over 70% of the bytes downloaded for the average website, byte per byte, JavaScript has a greater potential for negative performance impact — it can significantly impact download times, rendering performance, and CPU and battery usage. This article introduces tips and techniques for optimizing JavaScript to enhance the performance of your website....js"></script> ... </head> This works...rel="preload" href="important-js.js" as="script" /> <!-- Preload...

    developer.mozilla.org/en-US/docs/Learn/Performa...
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  3. ClipboardItem - Web APIs | MDN

    Learn about the ClipboardItem interface, including its constructor, properties, and methods, code examples, specifications, and browser compatibility.... js async function writeClipImg()...the corresponding blob object. js async function getClipboardContents()...

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  4. Express Tutorial Part 3: Using a Database (with...

    In this article, we've learned a bit about databases and ORMs on Node/Express, and a lot about how Mongoose schema and models are defined. We then used this information to design and implement Book, BookInstance, Author and Genre models for the LocalLibrary website....js/JavaScript) Next This article...promise-based ORM for Node.js and io.js. It supports the dialects...

    developer.mozilla.org/en-US/docs/Learn/Server-s...
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  5. content/files/en-us/web/html/element/input/colo...

    The content behind MDN Web Docs. Contribute to mdn/content development by creating an account on GitHub....over time to the color value: ```js colorPicker.addEventListener("input"...appropriately in either case. ```js colorPicker.select(); ``` ##...

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  6. Network Information API - Web APIs | MDN

    The Network Information API provides information about the system's connection in terms of general connection type (e.g., 'wifi, 'cellular', etc.). This can be used to select high definition content or low definition content based on the user's connection.... js let type = navigator.connection...NetworkInformation.effectiveType property. js let preloadVideo = true; const...

    developer.mozilla.org/en-US/docs/Web/API/Networ...
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  7. TextDecoder - Web APIs | MDN

    Learn about the TextDecoder interface, including its constructor, properties, and methods, code examples, specifications, and browser compatibility.... js let utf8decoder = new TextDecoder();...appropriate for Cyrillic script. js const win1251decoder = new T...

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  8. HTMLInputElement: setSelectionRange() method - ...

    Learn about the HTMLInputElement.setSelectionRange() method, including its syntax, code examples, specifications, and browser compatibility.... Syntax js setSelectionRange(selectionStart...ect text</button> JavaScript js function selectText() { const...

    developer.mozilla.org/en-US/docs/Web/API/HTMLIn...
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  9. FileList - Web APIs | MDN

    Learn about the FileList interface, including its properties and methods, specifications and browser compatibility....node's file list as a File object: js const file = document.getEle...0; height: 200px; } JavaScript js const output = document.querySelector("...

    developer.mozilla.org/en-US/docs/Web/API/FileList
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  10. PageRevealEvent - Web APIs | MDN

    Learn about the PageRevealEvent interface, including its constructor and properties, code examples, specifications, and browser compatibility....reveal() function in the <head> : js function reveal() { // Include...cross-document navigation. Examples js window.addEventListener("pagereveal"...

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