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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Document</title> | |
| </head> | |
| <body> | |
| <input type="file"> | |
| <table> | |
| <thead> | |
| <tr> | |
| <th>name</th> | |
| <th>link</th> | |
| <th>#matches</th> | |
| </tr> | |
| </thead> | |
| <tbody id="tbody"></tbody> | |
| </table> | |
| <script> | |
| const input = document.querySelector('input'); | |
| const tbody = document.querySelector('#tbody'); | |
| input.addEventListener('change', () => { | |
| const reader = new FileReader(); | |
| reader.onerror = console.error; | |
| reader.onload = | |
| ({ target: { result } }) => | |
| parseAndPresent(result); | |
| reader.readAsText(input.files[0], "UTF-8"); | |
| }); | |
| const parseAndPresent = result => | |
| Object.entries(groupMatches( | |
| Array.from(stringToHTML(result).querySelectorAll('a')) | |
| )) | |
| .filter(([_, { matches }]) => matches > 1) | |
| .map(([_, v]) => createRow(v)) | |
| .forEach(row => tbody.appendChild(row)); | |
| const groupMatches = | |
| anchorsTags => | |
| anchorsTags | |
| .map(anchorToLinkObject) | |
| .reduce((acc, linkObject) => { | |
| if (acc.hasOwnProperty(linkObject.link)) { | |
| acc[linkObject.link].matches++ | |
| } else { | |
| acc[linkObject.link] = linkObject | |
| } | |
| return acc; | |
| }, {}) | |
| const anchorToLinkObject = a => ({ link: a.href, name: a.innerText, matches: 1 }) | |
| const createRow = | |
| ({ name, link, matches }, elType = 'tr') => { | |
| const el = document.createElement(elType) | |
| el.innerHTML = ` | |
| <td>${name}</td> | |
| <td><a href="${link}">${link}</a></td> | |
| <td>${matches}</td> | |
| ` | |
| return el | |
| } | |
| const stringToHTML = | |
| str => | |
| (new DOMParser()).parseFromString(str, 'text/html') | |
| </script> | |
| </body> | |
| </html> |
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