input tag value set the value using jquery one by one? code example

Example 1: assign input text value jquery

<?= $this->Form->input('number_six', array(
     'label' => false,
     'class' => 'form-control number_six',
     'maxlength' => "1" ,
     'oninput' => "this.value=this.value.replace(/[^0-9]/g,'');"
   ));?>

$(".number_six").val("");

Example 2: change inptu val

//one of these 2 should suffice
$('#id').attr('value', 'xxx')
$('#id').val('xxx');