參考LIHKG Show User Info
搵呢段code
入面有段
效果睇落唔多好
node.appendChild(messageInfo);
node.insertBefore(messageInfo, node.firstChild.nextElementSibling)
node.appendChild(messageInfo);
let nextSibling = node.firstChild.nextElementSibling;
if (nextSibling.tagName == 'BLOCKQUOTE') nextSibling = nextSibling.nextElementSibling;
node.insertBefore(messageInfo, nextSibling);