File for Chris' project

main.js

// Returns a random DNA base
const returnRandBase = () => {
  const dnaBases = ['A', 'T', 'C', 'G'] // Adenine, Thymine, Cytosine, and Guanine. 4 Bases of DNA
  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
}

const pAequorFactory = (specimenNum, dna) => {
    return {
      specimenNum : specimenNum,
      dna : dna
    } 
}

const mutate = (dna) => {
  let randomIndex = Math.floor(Math.random() * dna.length);
  let newBase = returnRandBase();
  while (newBase === dna[randomIndex]) {
    newBase = returnRandBase();
  }
  dna[randomIndex] = newBase;
  return dna;
}

const compareDNA = (pAequorObject) => {
  let total = 0
  for (let i = 0; i < this.dna.length; i++) {
    if (pAequorObject.dna[i] === 'C' || this.dna[i] === 'G') {
      total++;
    }
  }
}

To run this script, open a terminal and run:

node

This will open a Node environment, and then run:

.load main.js

Now the functions from your file main.js will be available to run, like this:

mutate(['f'])
[ 'G' ]

pAequorFactory(10, mockUpStrand())
{ specimenNum: 10,
  dna: [ 'G', 'C', 'C', 'C', 'T', 'C', 'C', 'G', 'A', 'G', 'T', 'T', 'C', 'C', 'A' ] }