Problems with array "Uncaught Referenceerror: Function is not defined"

Question

Beauty guys? It happens the following, I created a tool to generate gambling (quina, mega sena and etc. link tool: generaterandom.000webhostapp.com)

In the attached image we see the part where the algorithm puts 60 random numbers in an array Then it is traversed the entire array to check if a number left repeated, if it was repeated, all 60 numbers are generated again, this is making it very heavy and this recursion is getting in the way of a lot, crashing and returning me "Uncaught Referenceerror: Function is not defined"

I wanted to know if it is possible to optimize this part of the code, with only one for, generate 1 number, see if it is in the array and add, would be fewer lines, less for and I believe that would not lock, but I can not do this optimization in the lines, I did but it didn’t work out... can someone guide me? whole fuction link: generaterandom.000webhostapp.com/gerarJogos.js

for (var i = 0; i < comprimento; i++){
    vet[i] = Math.floor(Math.random() * 60 + 1);
}

for (var z = 0; z < comprimento; z++){
   for(var y = 0; y < comprimento; y++){
       if(z !== y){
          if(vet[z] === vet[y]){
             gerarJogos();
    } 
  }
}

Answer 1

You can make a while where the condition to exit the loop is that the array reaches a length of X elements. Inside this while you can use Array.includes and test if the number already exists.

Example:

const comprimento = 5
let numeros = []

while (numeros.length < comprimento) {
  let random = Math.trunc(Math.random() * 60 + 1)
  
  if(!numeros.includes(random)) {
    numeros.push(random)
  } else {
    console.log(`Número repetido, tentando novamente (${random})`)
  }
}

console.log(numeros)

Answer 2

Another alternative to this problem would be to use a data structure called set, its two main features are not allow duplicated elements and is not a classifieds collection.

Logic is simplified in this way:

let sorteio = new Set();

while(sorteio.size < 6) sorteio.add(Math.trunc(Math.random() * 60 + 1));