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Discover clear, example-based answers to real JavaScript challenges. From functions, arrays, and DOM manipulation to ES6+ syntax and async programming, every response is written to help you understand how and why things work. Whether you’re building interactive sites or learning core logic, these Q&As make JavaScript easier and more powerful.

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    We welcome your questions. Daily Q&A's about JavaScript are automatically generated after 12:00 AM through our proprietary AI-assisted system. Just like us humans, AI will sometimes revisit similar questions — because new data or insights can lead to different answers.
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    How can I convert a Blob to a base64 string in JavaScript for uploading to a server?

    Asked on Sunday, Nov 16, 2025

    To convert a Blob to a base64 string in JavaScript, you can use the FileReader API. This allows you to read the Blob's data as a base64-encoded string, which is useful for uploading to a server. funct…

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    How can I ensure my custom web component updates correctly when its attributes change in different browsers?

    Asked on Saturday, Nov 15, 2025

    To ensure your custom web component updates correctly when its attributes change, you should use the "attributeChangedCallback" lifecycle method. This method is part of the Web Components API and is s…

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    How many types of array methods are there?

    Asked on Friday, Nov 14, 2025

    JavaScript provides a variety of array methods to manipulate and interact with arrays. These methods can be categorized based on their functionality, such as mutator methods, accessor methods, and ite…

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    Why does my browser console show a CORS error when importing an ES6 module from a CDN?

    Asked on Friday, Nov 14, 2025

    CORS (Cross-Origin Resource Sharing) errors occur when a web page tries to make requests to a different domain than the one that served the web page, and the server does not allow such requests. When …

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