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) { highlightTag(randomTag) setTimeout(() => { unHighlightTag(randomTag) }, 100) } }, 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') }this is index.html ad script.js

Enter all of the choices divided by a comma(',')/
Press enter when you are done

explain the all concept to me how it work, not just the overall concept but oso coding that lead to the flow, explain each line of code so i can understand. a completely knowledge crystal clear explaination, i need scaffolding method so i can understand better

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Welcome to the Random Choice Picker tutorial. This web application helps users make random selections from a list of choices. Users type their options separated by commas, press Enter, and the app randomly highlights one choice after an exciting animation sequence. Let's dive into the code structure and understand how each component works together. Welcome to the Random Choice Picker explanation! This is a simple but powerful web application that helps you make decisions by randomly selecting from a list of choices you provide. You type your options separated by commas, and the app will create visual tags and randomly pick one for you. Let's start with the HTML structure. The HTML document contains a textarea element with ID 'textarea' where users input their choices, and a div with ID 'tags' where the choice tags will be displayed. In JavaScript, we get references to these DOM elements using getElementById. The textarea is immediately focused so users can start typing right away. The core functionality starts with an event listener attached to the textarea. Every time a user types (keyup event), it calls the createTags function with the current input value. The createTags function splits the input by commas, filters out empty strings, trims whitespace, and creates visual tag elements. If the user presses Enter, the input is cleared and the random selection process begins. The random selection process is where the magic happens. The randomSelect function runs a dramatic animation for exactly 3 seconds. It uses setInterval to highlight a random tag every 100 milliseconds for 30 iterations, creating excitement. Each tag briefly gets a yellow highlight class, then it's removed after 100ms. Finally, after the animation ends, one final random tag is selected and permanently highlighted as the chosen result. To summarize, the Random Choice Picker is a beautifully simple application that combines HTML structure, JavaScript DOM manipulation, event handling, string processing, and visual effects. The HTML provides the foundation with a textarea and display div. JavaScript grabs these elements, listens for user input, dynamically creates visual tags, and implements an engaging random selection animation. It's a perfect example of how a few lines of code can create an interactive and fun user experience!