JSFiddle - React, Tailwind, and code Playground
JavaScript
const blocks = [...Array(20).keys()]
blocks.forEach((item, index) => {
if (index % 4 === 2) {
console.log("all", index)
}
if (index !== 0 && index % 4 === 0) {
console.log("media", index)
}
console.log("block")
})