BuddyPress.org

@meebovn Just saw your post. Here is the code I was using. I just load it from it’s own JS file in my functions.php. IIRC most of it is copy-pasta from a buddypress file with w/e tweaking I needed to get it working. It’s not pretty though.

jQuery(document).ready(function($) {
	
	/* necessary to get the custom post-form working */
  	//Deregister buddypress built in actions
  	$('#whats-new').off("focus");
  	$('#whats-new-form').off("focusout");
  	$('#whats-new-options').show();
  	$('#aw-whats-new-submit').off('click');

  	/* New posts */
	$('#aw-whats-new-submit').on( 'click', function() {
		var editor = tinymce.get('whats-new');
		editor.save();

		var last_date_recorded = 0,
			button = $(this),
			form   = button.closest('form#whats-new-form'),
			inputs = {}, post_data;

		// Get all inputs and organize them into an object {name: value}
		$.each( form.serializeArray(), function( key, input ) {
			// Only include public extra data
			if ( '_' !== input.name.substr( 0, 1 ) && 'whats-new' !== input.name.substr( 0, 9 ) ) {
				if ( ! inputs[ input.name ] ) {
					inputs[ input.name ] = input.value;
				} else {
					// Checkboxes/dropdown list can have multiple selected value
					if ( ! $.isArray( inputs[ input.name ] ) ) {
						inputs[ input.name ] = new Array( inputs[ input.name ], input.value );
					} else {
						inputs[ input.name ].push( input.value );
					}
				}
			}
		} );

		form.find( '*' ).each( function() {
			if ( $.nodeName( this, 'textarea' ) || $.nodeName( this, 'input' ) ) {
				$(this).prop( 'disabled', true );
			}
		} );

		/* Remove any errors */
		$('div.error').remove();
		button.addClass('loading');
		button.prop('disabled', true);
		form.addClass('submitted');

		/* Default POST values */
		object = '';
		item_id = $('#whats-new-post-in').val();
		content = $('#whats-new').val();
		firstrow = $( '#buddypress ul.activity-list li' ).first();
		activity_row = firstrow;
		timestamp = null;

		// Checks if at least one activity exists
		if ( firstrow.length ) {

			if ( activity_row.hasClass( 'load-newest' ) ) {
				activity_row = firstrow.next();
			}

			timestamp = activity_row.prop( 'class' ).match( /date-recorded-([0-9]+)/ );
		}

		if ( timestamp ) {
			last_date_recorded = timestamp[1];
		}

		/* Set object for non-profile posts */
		if ( item_id > 0 ) {
			object = $('#whats-new-post-object').val();
		}

		post_data = $.extend( {
			action: 'post_update',
			'cookie': bp_get_cookies(),
			'_wpnonce_post_update': $('#_wpnonce_post_update').val(),
			'content': content,
			'object': object,
			'item_id': item_id,
			'since': last_date_recorded,
			'_bp_as_nonce': $('#_bp_as_nonce').val() || ''
		}, inputs );

		$.post( ajaxurl, post_data, function( response ) {
			form.find( '*' ).each( function() {
				if ( $.nodeName( this, 'textarea' ) || $.nodeName( this, 'input' ) ) {
					$(this).prop( 'disabled', false );
				}
			});

			/* Check for errors and append if found. */
			if ( response[0] + response[1] === '-1' ) {
				form.prepend( response.substr( 2, response.length ) );
				$( '#' + form.attr('id') + ' div.error').hide().fadeIn( 200 );
			} else {
				if ( 0 === $('ul.activity-list').length ) {
					$('div.error').slideUp(100).remove();
					$('#message').slideUp(100).remove();
					$('div.activity').append( '<ul id="activity-stream" class="activity-list item-list">' );
				}

				if ( firstrow.hasClass( 'load-newest' ) ) {
					firstrow.remove();
				}

				$('#activity-stream').prepend(response);

				if ( ! last_date_recorded ) {
					$('#activity-stream li:first').addClass('new-update just-posted');
				}

				if ( 0 !== $('#latest-update').length ) {
					var l   = $('#activity-stream li.new-update .activity-content .activity-inner p').html(),
						v     = $('#activity-stream li.new-update .activity-content .activity-header p a.view').attr('href'),
						ltext = $('#activity-stream li.new-update .activity-content .activity-inner p').text(),
						u     = '';

					if ( ltext !== '' ) {
						u = l + ' ';
					}

					u += '<a href="' + v + '" rel="nofollow">' + BP_DTheme.view + '</a>';

					$('#latest-update').slideUp(300,function(){
						$('#latest-update').html( u );
						$('#latest-update').slideDown(300);
					});
				}

				$('li.new-update').hide().slideDown( 300 );
				$('li.new-update').removeClass( 'new-update' );
				$('#whats-new').val('');
				form.get(0).reset();

				// reset vars to get newest activities
				newest_activities = '';
				activity_last_recorded  = 0;
			}

			//$('#whats-new-options').slideUp();
			$('#whats-new-form textarea').animate({
				height:'2.2em'
			});
			$('#aw-whats-new-submit').removeClass('loading');
			$( '#whats-new-content' ).removeClass( 'active' );
		});

		return false;
	});
})