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Add virtual scrolling to dropdown and polar chart #19

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Task Description:

  1. Optimize Large Data Dropdown with Virtual Scrolling: Implement an efficient dropdown component that maintains good performance and user experience even with a large amount of data. Use virtual scrolling technology to ensure that only the visible portion of the list items is rendered, thereby reducing the rendering load on the browser.

  2. Polar Area Chart: This chart can be used to display data such as monthly rainfall, daily sales over a week, or hourly temperature changes throughout a day.

Task 1: Virtual Scrolling

Before adding virtual scrolling, the dropdown renders all items in full. After adding virtual scrolling, only the scrolled-to portion of the dropdown is rendered.

Task 1: polar chart

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