To solve this problem, we need to reformat the given HTML based on system requirements provided in a structured format. The objective is to transform each system's requirements into a standardized HTML structure that includes a heading, a list of minimum specifications, and appropriate formatting for readability. ### Approach The approach involves the following steps: 1. **Parsing the Input**: The input is an array of objects, where each object contains a "system" and its corresponding "requirement" in HTML format. Each requirement is a list of specifications. 2. **Extracting Specifications**: For each system, we need to parse the requirement HTML to extract the key-value pairs of specifications (e.g., OS, Processor, Memory). 3. **Constructing HTML Elements**: Each system's specifications are converted into a structured HTML format. This involves creating div containers, headings, paragraphs, and unordered lists (ul) with list items (li) for each specification. 4. **Formatting Additional Elements**: Each system's specifications are separated by line breaks to ensure readability. ### Solution Code ```javascript function reformatSystems(systems) { let result = ''; for (let system of systems) { let div = document.createElement('div'); div.className = 'prod-spec'; let h4 = document.createElement('h4'); h4.textContent = system.system + ' System Requirements'; div.appendChild(h4); div.appendChild(document.createElement('br')); let p = document.createElement('p'); p.innerHTML = 'MINIMUM SPECS'; div.appendChild(p); let ul = document.createElement('ul'); let parser = new DOMParser(); let doc = parser.parseFromString(system.requirement, 'text/html'); let lis = doc.querySelectorAll('li'); for (let li of lis) { let strongs = li.querySelectorAll('strong'); if (strongs.length === 0) continue; let key = strongs[0].textContent; let value = li.textContent.substring(key.length).trim(); let newLi = document.createElement('li'); let span = document.createElement('span'); span.textContent = key; newLi.appendChild(span); newLi.appendChild(document.createTextNode(value)); ul.appendChild(newLi); } if (ul.children.length > 0) { div.appendChild(ul); } result += div.outerHTML; if (system !== systems[systems.length - 1]) { result += '

'; } } return result; } ``` ### Explanation 1. **Parsing the Input**: The function iterates over each system object in the input array. Each system has a "system" name and its corresponding requirements in HTML. 2. **Extracting Specifications**: Using a DOM parser, the requirement HTML is parsed to extract each list item (li). Each li contains a strong tag with the specification key and the corresponding value. 3. **Constructing HTML Elements**: For each specification, a list item is created with a span for the key and the value. These list items are aggregated into an unordered list within a container div. 4. **Formatting Additional Elements**: Each system's specifications are wrapped in a div with a class "prod-spec". After each system's div, two line breaks are added to separate the systems. This method ensures that the system requirements are presented in a clear and structured manner, enhancing readability and maintaining a consistent format.

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