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DOM manipulation and Fetch API
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async function asyncSleep(ms) { | |
return new Promise(resolve => setTimeout(resolve, ms)); | |
} | |
async function onSearchClick(event) { | |
event.preventDefault(); | |
const cityNameInput = document.getElementById('city-name'); | |
const cityName = cityNameInput.value; | |
const resultsList = document.getElementById('search-results-list'); | |
let resultElement = document.createElement('li'); | |
const progressTemplateScript = document.getElementById('search-progress-template'); | |
const progressTemplate = progressTemplateScript.textContent.trim(); | |
resultElement.innerHTML = progressTemplate; | |
resultElement.querySelector('#search-query').textContent = cityName; | |
resultElement.querySelector('#delete-result-button').addEventListener('click', event => { | |
resultElement.remove(); | |
resultElement = null; | |
event.preventDefault(); | |
}); | |
resultsList.appendChild(resultElement); | |
const searchUrl = | |
`https://api.teleport.org/api/cities/?search=${encodeURIComponent(cityName)}`; | |
const response = await fetch(searchUrl, { | |
method: 'GET', mode: 'cors', headers: { | |
accept: 'application/vnd.teleport.v1+json', | |
}, | |
}); | |
await asyncSleep(10 * 1000); | |
const resultData = await response.json(); | |
const cityResults = resultData._embedded['city:search-results']; | |
const cityData = cityResults.map(cityJson => { | |
return { | |
name: cityJson.matching_full_name, | |
url: cityJson._links['city:item'].href, | |
}; | |
}); | |
if (resultElement === null) // The search was canceled. | |
return; | |
const resultTemplateScript = document.getElementById('search-result-template'); | |
const resultTemplate = resultTemplateScript.textContent.trim(); | |
resultElement.innerHTML = resultTemplate; | |
resultElement.querySelector('#search-query').textContent = cityName; | |
resultElement.querySelector('#first-result-link').textContent = cityData[0].name; | |
resultElement.querySelector('#first-result-link').setAttribute('href', cityData[0].url); | |
resultElement.querySelector('#delete-result-button').addEventListener('click', event => { | |
resultElement.remove(); | |
event.preventDefault(); | |
}); | |
resultsList.appendChild(resultElement); | |
} | |
function initialize() { | |
const searchButton = document.getElementById('city-search-button'); | |
searchButton.addEventListener('click', onSearchClick); | |
} | |
if (document.readyState === 'complete') { | |
initialize(); | |
} else { | |
window.addEventListener('load', initialize); | |
} |
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<!doctype html> | |
<meta charset="utf-8"> | |
<title>DOM playground</title> | |
<script src="code.js"></script> | |
<h1>City search form</h1> | |
<form> | |
<p><label for="city-name">City name</label></p> | |
<p><input type="text" id="city-name" /></p> | |
<p><button id="city-search-button">Search</button> | |
</form> | |
<h1>Searches</h1> | |
<ul id="search-results-list"> | |
</ul> | |
<script type="html-template" id="search-result-template"> | |
<p>Query: <span id="search-query"></span>.</p> | |
<p>First result: <a id="first-result-link"></a>.</p> | |
<p><button type="button" id="delete-result-button">Delete</button></p> | |
</script> | |
<script type="html-template" id="search-progress-template"> | |
<p>Searching for <span id="search-query"></span>...</p> | |
<p><button type="button" id="delete-result-button">Delete</button></p> | |
</script> |
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