Получите входное значение jQuery
//Get
var bla = $('#txt_name').val();
//Set
$('#txt_name').val(bla);
Dangerous Dunlin
//Get
var bla = $('#txt_name').val();
//Set
$('#txt_name').val(bla);
//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();
$("#textInput").val() // To get value of element textInputvar str = $("#myInput"). val();