JSFiddle - React, Tailwind, and code Playground

JavaScript

function getRndInteger(min = 1, max = 5, step = 1) {
  const range = (max - min) / step
  return Math.floor(Math.random() * range) * step + min
}

const items  = []
let obj = {
  content: "<p></p>"
}

setInterval(() => {
	const random = getRndInteger(1, 3)
	obj = {
    content: `<p>hello world ${random}</p>`
  }
  
  if (items.indexOf(obj.content) === -1) items.push(obj)
  console.log(items)
}, 1000)