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JavaScript Questions

How can you handle errors in asynchronous JavaScript code?

How can you create a responsive table in HTML that is scrollable on smaller screens?

A web application is experiencing memory leaks during long user sessions. Which approach would most effectively identify the source?

A JavaScript application using WebSockets is experiencing performance issues with frequent updates. Which optimization would be most effective?

How can you dynamically load a JavaScript file in an HTML page based on a specific condition?

How can you secure communication between an HTML document and a server using JavaScript?

A JavaScript application needs to efficiently process large arrays of data. Which implementation would provide the best performance?

How can you implement lazy loading of images in an HTML document using JavaScript?

A JavaScript application needs to implement complex data transformations for analytics. Which implementation would be most maintainable?

How can you handle long-running tasks without blocking the main thread in an HTML document using JavaScript?