JS 判断字符串是否为 HTML

题解

function isHTML(str) {
  var a = document.createElement('div');
  a.innerHTML = str;

  for (var c = a.childNodes, i = c.length; i--; ) {
    if (c[i].nodeType == 1) return true;
  }

  return false;
}

参考文章

• https://stackoverflow.com/questions/15458876/check-if-a-string-is-html-or-not