This example displays a list of filtered first names from a JSON dataset, showing only those with a feminine gender marker after a simulated data-loading delay. It uses React 16.10, loaded via UMD scripts, alongside a custom asynchronous `getPrénoms` function that returns a Promise. The code manipulates the DOM directly with `document.getElementById` and `textContent` rather than React rendering, and relies on `Array.filter` and `Array.map` to extract and format the name and origin fields.