JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>

<head>
  <script src="myjs.js"> </script>
  <link rel="stylesheet" type="text/css" href="style.css">
  <!-- Font Link Below Google fonts -->


  <meta charset="utf-8">
  <title>DigitalPet2</title>
</head>
<body>
<section class="dark">
   <p  class="dark" id="demo"><button onclick="entername()">Click to Enter Name & see your Fortune</button></p>
   <p  id="tamoVoice" class="dark"></p>
 </section>
<section id="tamoHome"></section>


</body>

</html>

CSS

p{
  text-align: left;
}
.dark{
  margin: auto;
  width: 50%;
  text-align: center;
  color: pink;
  background-color: black;
  border-radius: 8em;
}
.hidden{
    visibility:hidden;
}
#tamoVoice, #petStats{
    border: 1px solid black;
    width: 200px;
    height: 50px;
}

.talking{
    animation: mouthMotion 1s ease-in-out 1s infinite;
}


@keyframes mouthMotion{
  0%{
      transform: scaleY(1);
      transform-origin: 20px 320px;
  }
  50%{
      transform: scaleY(0.5);
      transform-origin: 20px 320px;
  }
  100%{
      transform: scaleY(1);
      transform-origin: 20px 320px;
  }
}

JavaScript

console.log("Checking  log...And it Works!");

function Tamogotchi(tamoName) {

    this.Name;

    this.init = () => {
        this.Name = tamoName;
        this.fetchData();
        this.showTamogotchi(document.querySelector("#tamoHome"));
        this.talkBox = document.querySelector("#tamoVoice");
        this.statsCounter = document.querySelector("#petStats");
    }
    this.init();
}
// Fetches Data from Json File
Tamogotchi.prototype.fetchData = function(){
  fetch('data.json')
   .then(data => data.json())
   .then( data =>{
       this.sayings = data.fortunes;
       this.moods = data.moods;
       this.hatch();
})
.catch(error =>{
       console.log(error);
   });
}

function entername() {
    var person = prompt("Please enter your name", "Harry Potter");
    if (person != null) {
        document.getElementById("demo").innerHTML =
        "Hello " + person + "! Check Your Fortune";
    }
}
// Hatch Function to start start digital pet
Tamogotchi.prototype.hatch = function(){
    this.initialFace();
}

// Function for random words
Tamogotchi.prototype.words = function(){
var say = this.moods[Math.floor(Math.random()*this.moods.length)];
this.talk(say);
}

// a command that takes in a mood and returns a phrase also changes pet face depending on mood entered uses check command
Tamogotchi.prototype.talk = function(mood){
    let endFace = this.neutralFace;
    switch (mood){
        case "good":
            endFace = this.happyface;
            break;
        case "bad":
            endFace = this.sadFace;
            break;
    }
    const moodPhrases  = this.sayings.filter(saying => saying.mood == mood);
    if(moodPhrases.length>0){
        const moodPhrase = moodPhrases[Math.floor(Math.random()*moodPhrases.length)];
        this.useMouth(moodPhrase.saying, endFace);

    }else{
        this.useMouth("derp derp!", endFace);
    }
}
Tamogotchi.prototype.useMouth = function(words, mouthType){
    this.startTalking(mouthType);
    this.talkBox.innerText =...