simple calculator and data processor

This project started with setting up a basic HTML file and linking a JavaScript file, with the goal of creating all elements dynamically using DOM manipulation instead of writing them directly in HTML. The initial step was to design the main interface by adding two buttons: one for the calculator and another for the data processor. After that, input fields and operation buttons were created for the calculator, and functionality for addition, subtraction, multiplication, and division was implemented using event listeners.

In the next phase, the data processor feature was developed. An input field was added to accept comma-separated numbers, and array operations like calculating the sum, finding the maximum value, and filtering even numbers were implemented using methods such as map, reduce, and filter. Later, the focus shifted to improving the user experience by controlling the visibility of elements, showing only the relevant section when a button is clicked.

Finally, the project was tested to ensure all features worked correctly, and minor issues related to input handling and result display were fixed. The project helped in strengthening concepts like DOM manipulation, event handling, and working with arrays in JavaScript.