Click the reply below others' posts in the forum and the reply title is changed to "Reply to 24 # Post"

My methods
Copy codeThe Code is as follows:
<A href = "#" onclick = "document. getElementById ('body '). focus (); document. getElementById ('title '). value = 'reply: <{$ I + 1}> Lou '; "> reply </a>
Document. getElementById ('body'). focus () // sets the mouse focus
Document. getElementById ('title'). value // you can set the title value or document. getElementById ('title'). innertext

JQUERY
Copy codeThe Code is as follows:
Function cmtreply (name)
{
$ ("# Content"). val ('reply '+ name + ':');
Window. location. hash = "# cmt_form ";
$ ("# Content") [0]. focus ();
}