how to return a value using jquery 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: jquery function return

function myFunction(p1, p2) {
  var a = "";
 $.post( "/url", function( data ) {a = data.result;});
  return a;
}