JSFiddle - React, Tailwind, and code Playground

HTML

<h2 style="text-align: center;">Casual numbers no repeat</h2>

<p id="array_number" style="font-size: 25px; text-align: center;"></p>

JavaScript

var min = 1;
var max = 90;
//Number of numbers to extract
var stop = 6;

var numbers = [];

for (let i = 0; i < stop; i++) {
  var n =  Math.floor(Math.random() * max) + min;
  var check = numbers.includes(n);
  
  if(check === false) {
    numbers.push(n);
  } else {
    while(check === true){
      n = Math.floor(Math.random() * max) + min;
      check = numbers.includes(n);
        if(check === false){
          numbers.push(n);
        }
     }
  }
}

sort();

//Sort the array in ascending order
function sort() {
  numbers.sort(function(a, b){return a-b});
  document.getElementById("array_number").innerHTML = numbers.join(" - ");
}