Function isBlank

static/word2md/turndown.js:601–609

(node)

}

function isBlank (node) {
	//如果要忽略掉空白的表，请删除'TABLE','THEAD','TBODY','TR'
  return (
    ['A', 'TABLE','THEAD','TBODY','TR','TH', 'TD', 'IFRAME', 'SCRIPT', 'AUDIO', 'VIDEO'].indexOf(node.nodeName) === -1 &&
    /^\s*$/i.test(node.textContent) &&
    !isVoid(node) &&
    !hasVoid(node)
  )
}

function flankingWhitespace (node) {
  var leading = '';