Pokemon
Revision as of 19:47, 16 August 2022 by Andr3w (talk | contribs) (→Step Three - React to user click events)
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="detail"></div>
<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.results[0].name;
}
- 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
Notice that although you have the details of many pokemon you are only showing one of them.
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<20;i++){
let div = document.createElement('div');
div.innerText = data.results[0].name;
document.getElementById('pokelist').append(div);
}
}
Notice that there are two errors in the above code:
- Each time around the loop it always shows element 0 of the
data.resultsarray - Only 20 names are shown, even though the list contains more than that
Step Three - React to user click events
You can make something happen when the user clicks on a name in the pokelist
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<data.result.length;i++){
let div = document.createElement('div');
div.innerText = data.results[i].name;
div.onclick = ()=>{
document.getElementById('detail').innerHTML = `
<h2>${data.results[i].name}</h2>
`;
}
document.getElementById('pokelist').append(div);
}
}