50projects50days/random-choice-picker/script.js

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JavaScript
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const tagsEl = document.getElementById('tags')
const textarea = document.getElementById('textarea')
textarea.focus()
textarea.addEventListener('keyup', (e) => {
createTags(e.target.value)
if(e.key === 'Enter') {
setTimeout(() => {
e.target.value = ''
}, 10)
randomSelect()
}
})
function createTags(input) {
const tags = input.split(',').filter(tag => tag.trim() !== '').map(tag => tag.trim())
tagsEl.innerHTML = ''
tags.forEach(tag => {
const tagEl = document.createElement('span')
tagEl.classList.add('tag')
tagEl.innerText = tag
tagsEl.appendChild(tagEl)
})
}
function randomSelect() {
const times = 30
const interval = setInterval(() => {
const randomTag = pickRandomTag()
if (randomTag !== undefined) {
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highlightTag(randomTag)
setTimeout(() => {
unHighlightTag(randomTag)
}, 100)
}
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}, 100);
setTimeout(() => {
clearInterval(interval)
setTimeout(() => {
const randomTag = pickRandomTag()
highlightTag(randomTag)
}, 100)
}, times * 100)
}
function pickRandomTag() {
const tags = document.querySelectorAll('.tag')
return tags[Math.floor(Math.random() * tags.length)]
}
function highlightTag(tag) {
tag.classList.add('highlight')
}
function unHighlightTag(tag) {
tag.classList.remove('highlight')
}