Can I make a string "['A', 'B', 'C']" into a list? JavaScript

January 27, 2023

So I made a Freckle by Renissance hack in JavaScript and I retrived the JSON base64 and decoded it using the atob() function where you get the answer but I’m just wondering if I can make the decoded string: "[‘A’, ‘B’, ‘C’]" (The correct answers) into a list excluding the ‘[]’ and ‘,’.

async function getAnswer(){
    var id = document.getElementsByClassName("math-question__wrapper___iRtlD")[0]["dataset"]["questionId"];
    var response = await fetch("https://api.freckle.com/2/math/questions/"+id+"?lang=en", {
      method: "GET",
    
      headers: {
        "Content-type": "application/json; charset=UTF-8"
      }
    });

    
    json = await response.json();
    var answer=json["obfuscated-correct-answers"];
    if (typeof answer == "undefined") {
        answer=json['obfuscated-fill-in-the-blanks-correct-answers'];
    }

    
    var final=atob(answer);
    console.log(final);
}
getAnswer();

>Solution :

The base 64 string decodes to valid JSON, so use JSON.parse() after calling atob().

async function getAnswer() {
  var id = document.getElementsByClassName("math-question__wrapper___iRtlD")[0]["dataset"]["questionId"];
  var response = await fetch("https://api.freckle.com/2/math/questions/" + id + "?lang=en", {
    method: "GET",

    headers: {
      "Content-type": "application/json; charset=UTF-8"
    }
  });


  json = await response.json();
  var answer = json["obfuscated-correct-answers"];
  if (typeof answer == "undefined") {
    answer = json['obfuscated-fill-in-the-blanks-correct-answers'];
  }

  var final = JSON.parse(atob(answer));
  console.log(final);
}
getAnswer();