Pokemon
You can use the api provided by https://pokeapi.co/ to provide data for this appication.
Step One - load the data
Create a new folder with two files:
index.html
<!DOCTYPE html>
<html>
    <head>
        <script src="pokemon.js" defer></script>
    </head>
    <body>
        <h1>Welcome to the Pokemon App</h1>
        <div id="pokelist"></div>
    </body>
</html>
pokemon.js
document.body.onload = async ()=>{
   let resp = await fetch("https://pokeapi.co/api/v2/pokemon/?limit=30");
   let data = await resp.json();
   document.getElementById('pokelist').innerHTML = data;
}
- Double click on the file index.html to open it in chrome
 - Open 
Developer Toolsto see how the data is pulled into the JavaScript program 
Step Two - show a list of pokemon
To show the name of each pokemon you can use a loop:
pokemon.js
document.body.onload = async ()=>{
   let resp = await fetch("https://pokeapi.co/api/v2/pokemon/?limit=30");
   let data = await resp.json();
   for(let i=0;i<30;i++){
     let div = document.createElement('div');
     div.innerText = data.result[i].name;
     document.getElementById('pokelist').append(div);
}