paste labels.js

var match = location.href.match(/trello\.com\/([[cb])\/(.*)\//),
    copiedLabels = JSON.parse(localStorage.getItem('copiedLabels')),
    cookies, token, boardId, data;

    
if (match[1] === 'c') {
  boardId = window.IdCache.getBoardIdForCard(match[2]);
} else {
  boardId = window.IdCache.getBoardId(match[2]);
}


cookies = document.cookie.split('; ').reduce(function(memo, i) {
  var parts = i.split('=');
  memo[parts[0]] = parts[1];
  return memo;
}, {});

token = decodeURIComponent(cookies.token);

 
data = {}

for (var attr in window.copiedLabels) {
  data['labelNames/' + attr] = window.copiedLabels[attr];
}

data.token = token;
 
$.ajax({
  type: 'put',
  url: '/1/boards/' + boardId,
  data: data
}).then(function() {
  console.log('Pasted labels');
});