Hide question field in SharePoint Community Discussion Form (with JavaScript)

Unfortunately, it is not possible to hide the "question" field in a SharePoint Discussion list through the list settings.

"Hidden" field is greyed out

But you can with Javascript. Open the NewForm and add a script editor web part. Insert following code:

	<script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
	<script type="text/javascript">
	_spBodyOnLoadFunctionNames.push("ready");
	function ready()
	{
	$("h3.ms-standardheader:contains('Question')").closest("tr").hide();
	}
	</script>

view raw SpDiscussionHideQuestion.js hosted with ❤ by GitHub

Now the Question field isn't visible anymore.