Code Cademy Mysterious Organism Project

MysteriousOrganism

// Returns a random DNA base
const returnRandBase = () => {
  const dnaBases = ['A', 'T', 'C', 'G']
  return dnaBases[Math.floor(Math.random() * 4)] 
}

// Returns a random single stand of DNA containing 15 bases
const mockUpStrand = () => {
  const newStrand = []
  for (let i = 0; i < 15; i++) {
    newStrand.push(returnRandBase())
  }
  return newStrand
}

//finction to create multiple objects
const pAequorFactory = (number, dna) => {
    return ({
    specimenNum: number,
    dna: dna,
//method to create mutation
    mutate() {
  let i = Math.floor(Math.random()) * this.dna.lenght;
  let newBase = returnRandBase();
  while (this.dna[i] === newBase) {
    newBase = returnRandBase();
  }
    this.dna[randIndex] = newBase;
    return this.dna;
    },
  //method to compare DNA between two objects
    compareDNA (otherObj) {
      let identicalBases = 0;
      for (j=o; j<this.dna.lenght; j++) {
        if (this.dna[j] === this.otherObj[j]) {return identicalBases++;
        } else {
        return identicalBases;
        }
      }
  let precent = (identicalBases / this.dna.length) * 100;
  console.log(`Specimen #1 and specimen #2 have ${percent.toFixed(2)} DNA in common.`)
    },
//method to calculate likelier chance of survival
    willLikelySurvive() {
      let base = this.dna.filter(element => element==='C' || element==='G');
      return base.length / this.dna.length >= 0.6;
    },
  })
};

// to create new instances of the organism
const newInstances = [];
let idCounter = 1;

while (idCounter < 30) {
  let newOrganism = pAequorFactory(idCounter, mockUpStrand());
  if (newOrganism.willLikelySurvive()) {
    newInstances.push(newOrganism)
  }
idCounter++
};

console.log(newInstances);