how to give element value for other on jqueiry code example

Example 1: how to get a value using jquery

//for imput field given in HTML

<input type="text" id="myid" class="myclass" >
  
// Using ID to find value
  
$("#myid").val();

// Using Class to find value

$(".myclass").val();

Example 2: change inptu val

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