更改

(function(){

(function(){

     var commentBody = document.getElementsByClassName('comments-body')[0];

     var commentBody = document.getElementsByClassName('comments-body')[0];

     var commentForm = var commentForm = commentBody.getElementsByTagName('form')[1];

     var commentForm = commentBody.getElementsByTagName('form')[1];

     commentBody.removeChild(commentForm);

     commentBody.removeChild(commentForm);

     commentBody.insertBefore(commentForm, commentBody.childNodes[0]);

     commentBody.insertBefore(commentForm, commentBody.childNodes[0]);