getSubtasks

function getList(selector) {
  return [...document.querySelectorAll(selector)].map(item => item.textContent.trim());
}

function getSubtasks() {
  const SELECTORS = {
    key: '.issuekey', 
    tasks: '.stsummary'
  };
  const ARROW = '→';
  const keys = getList(SELECTORS.key);
  const tasks = getList(SELECTORS.tasks);
  
  const result = [];
  
	for (let i = 0; i< keys.length; i++) {
    result.push(`${keys[i]} ${ARROW} ${tasks[i]}`);
  }
  
  console.log(result.join('\n'))
}

getSubtasks();

showPendingSubTasks

function showPendingSubTasks() {
  const subTasks = document.querySelectorAll('.issuerow');
  subTasks.forEach(task => {
    const tag = task.querySelector('.jira-issue-status-lozenge');
    if (tag.textContent.toLowerCase().trim() !== 'backlog') {
      tag.style.backgroundColor = '#2684ff';
      tag.style.color = '#fff';
    } else {
			tag.style.color = null;
      tag.style.backgroundColor = null;
    }
  });
  console.log(subTasks.length)
}

showPendingSubTasks();