javascript.js

var items = [
  'amazon',     'github',      'html5',      'mastodon',   'reddit',       'soundcloud', 
  'tox',        'wechat',      'youtube',    'dropbox',    'gitlab',       'instagram', 
  'paypal',     'rss',         'spotify',    'tumblr',     'whatsapp',     'email',
  'google_plus','linkedin',    'pdf',        'skype',      'stackoverflow','twitter',
  'wikipedia',  'facebook',    'google',     'lock',       'phone',        'slideshare',
  'steam',      'vimeo',       'wire',       'flickr',     'hackernews',   'mail',
  'pinterest',  'snapchat',    'telegram',   'vk',         'wordpress',    'meetup',
  'line',       'lastpass',    'windows',    'digidentity','ubuntu',       'bitbucket',
  'apple',      'npm',         'docker',     'symantec',   'yubico',       'keybase',
  'ebay',       'evernote',    'kickstarter','yahoo',      'bitcoin',      'bluetooth',
  'ibm',        'yammer',      'android',    'authy',      'blogger',      'cloudflare',
  'codepen',    'digitalocean','discord',    'medium',     'airbnb',       'wifi',
  'delicious',  'disqus',      'ghost',      'opensource', 'patreon',      'trello'
];

var container = document.querySelector('.icons');
var range = document.querySelector('input[type="range"]');
var number = document.querySelector('input.rangeout');
range.addEventListener('input', function(e){
  number.value = parseInt(e.target.value);
  render(e.target.value);
});

number.addEventListener('input', function(e){
  range.value = parseInt(e.target.value);
  render(e.target.value);
});

var urls = items.map(item => 'tiny/' + item + '.svg');
var icons;
Promise.all(urls.map(url => fetch(url).then(res => res.text()))).then(all => {
  icons = all;
  render(range.value);
});

var render = function(radius = 15){
  console.log('Rendering!', icons);

  icons = icons.map(icon => {
    return icon.replace(/rx\=\"\d{0,2}\%/, 'rx="' + radius + '%"');
  });
  container.innerHTML = '<div>' + icons.join('</div><div>') + '</div>';
}