I can't Fixed 'JS' through Code Injection (7.1) anyone PLEASE!!

Site URL: https://siteid.squarespace.com/

It not working on my site. 

Please SOLVE these problem. 

Website Password: 11111

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<script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

<script>
const typedTextSpan = document.querySelector(".typed-text");
const cursorSpan = document.querySelector(".cursor");

const textArray = ["hard", "fun", "a journey", "LIFE"];
const typingDelay = 200;
const erasingDelay = 100;
const newTextDelay = 2000; // Delay between current and next text
let textArrayIndex = 0;
let charIndex = 0;

function type() {
  if (charIndex < textArray[textArrayIndex].length) {
    if(!cursorSpan.classList.contains("typing")) cursorSpan.classList.add("typing");
    typedTextSpan.textContent += textArray[textArrayIndex].charAt(charIndex);
    charIndex++;
    setTimeout(type, typingDelay);
  } 
  else {
    cursorSpan.classList.remove("typing");
      setTimeout(erase, newTextDelay);
  }
}

function erase() {
    if (charIndex > 0) {
    if(!cursorSpan.classList.contains("typing")) cursorSpan.classList.add("typing");
    typedTextSpan.textContent = textArray[textArrayIndex].substring(0, charIndex-1);
    charIndex--;
    setTimeout(erase, erasingDelay);
  } 
  else {
    cursorSpan.classList.remove("typing");
    textArrayIndex++;
    if(textArrayIndex>=textArray.length) textArrayIndex=0;
    setTimeout(type, typingDelay + 1100);
  }
}

document.addEventListener("DOMContentLoaded", function() { // On DOM Load initiate the effect
  if(textArray.length) setTimeout(type, newTextDelay + 250);
});
  
  </script>

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