Import WP .xml File With ALL Imported Content Assigned to the Same User

wp-import-as-one-user.js

// Import a WP .xml File
// Paste into Browser Console when it asks you who to assign different Users' Content to
// Change "75" to the desired User ID

jQuery( 'select[name^="user_map"]' ).each( function( index, element ) {
	jQuery( element ).val( 75 );
} );