Use action hook wpda_after_list_table to add custom HTML and JavaScript after a list table. Argument $self contains a reference to your list table instance, which allows you to interact with your list table through public members and methods.
function mylisttable_elements( $self ) {
// Add you HTML and JavaScript here...
}
add_action( 'wpda_after_list_table', 'mylisttable_elements', 7 );Note #
You can use this action hook in combination with filter wpda_column_default to add interactive elements to your list tables.