Improve search feature responsiveness

[tsviz]

Related to #43

Implements improvements to the search feature in the Java Spring Boot application, enhancing user interaction and optimizing resource usage.

• JavaScript Enhancements:

  • Introduces a debounce function in src/main/resources/static/js/search.js to delay search requests by 2 seconds, reducing the frequency of server requests during user input.
  • Updates the search functionality to dynamically display search results as the user types, improving interactivity and user experience.

• Backend Adjustments:

  • Modifies src/main/java/net/codejava/AppController.java to handle AJAX requests and return search results in JSON format, facilitating the dynamic updating of search results on the frontend.
  • Ensures compatibility with the updated search feature by adjusting the search method to support the new AJAX-based request and response mechanism.

• UI Enhancements:

  • Enhances the search bar in src/main/resources/templates/index.html by adding a placeholder text, encouraging users to start typing to search, thereby making the search feature more intuitive and interactive.

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