Created
April 25, 2022 06:42
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JS fetch api data with async await
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title>Random Ron</title> | |
<meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
<style type="text/css"> | |
body { | |
margin: 0 auto; | |
max-width: 40em; | |
width: 88%; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Random Ron</h1> | |
<blockquote id="quote" aria-live="polite"> | |
<em>Quotes are on their way...</em> | |
</blockquote> | |
<p> | |
<button id="get-quote">More Ron</button> | |
</p> | |
<script> | |
// Your code goes here... | |
let button = document.querySelector('#get-quote'); | |
let quote = document.querySelector('#quote'); | |
let api = 'https://ron-swanson-quotes.herokuapp.com/v2/quotes'; | |
// create an empty array that will store quotes | |
let quotes = []; | |
/* | |
async function displayQuote() { | |
// 1. Fetch - if response is ok, then return json, otherwise throw error | |
// 2. Then chain .then to do stuff with data | |
// 3. Then chain .catch for errors | |
await fetch(api).then(function (response) { | |
if (response.ok) { | |
return response.json(); | |
} | |
throw response.status; | |
}).then(function (data) { | |
// NEW: remove first quote if there are at least 50 quotes | |
if (quotes.length > 49) { | |
quotes.shift(); | |
}; | |
if (quotes.includes(data[0])) { | |
// console.log('SAME COPY!'); | |
// console.log(data[0]); | |
displayQuote(); | |
// NEW: add return! | |
return; | |
} else { | |
quote.textContent = data[0]; | |
quotes.push(data[0]); | |
// console.log(quotes); | |
} | |
}).catch(function (error) { | |
quote.textContent = 'Error message, a very beautiful one.' | |
}); | |
} | |
displayQuote(); | |
*/ | |
// Async ALWAYS returns a promise, even if you are not asynchronious code. | |
async function displayAsyncQuote() { | |
try { | |
let response = await fetch(api); | |
if (!response.ok) { | |
throw response.status; | |
} | |
let data = await response.json(); | |
if (quotes.length > 49) { | |
quotes.shift(); | |
}; | |
if (quotes.includes(data[0])) { | |
// console.log('SAME COPY!'); | |
// console.log(data[0]); | |
displayQuote(); | |
// NEW: add return! | |
return; | |
} else { | |
quote.textContent = data[0]; | |
quotes.push(data[0]); | |
// console.log(quotes); | |
} | |
} catch (error) { | |
console.warn(error); | |
quote.textContent = 'Error message, a very beautiful one.' | |
} | |
} | |
displayAsyncQuote(); | |
button.addEventListener('click', displayAsyncQuote); | |
</script> | |
</body> | |
</html> |
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