JSFiddle - React, Tailwind, and code Playground

by styaue

HTML

https://jsfiddle.net/styaue/jbw2nem4/5/#

JavaScript

function DNAStrand(dna){
  //your code here
  const everyCat = Array.from(dna.toUpperCase());
  const _lengh = everyCat.length;
  console.log(everyCat);
  console.log(_lengh);
  for(var i = 0;i<_lengh; i++){
    switch (everyCat[i]) {
        case 'A':
            everyCat[i] = "T";
            break;
        case 'T':
            everyCat[i] = "A";
            break;
        case 'C':
            everyCat[i] = "G";
            break;
        case 'G':
            everyCat[i] = "C";
            break;
        default:
            break;
    }
  }
  return everyCat.join('');
}
console.log(DNAStrand('ATAATTTTGTAGCATAGATATGGA'));