get value by id in jquery

1$(this).attr('id')

1var myId = $(this).attr('id');
2alert( myId );

1//for imput field given in HTML
2
3<input type="text" id="myid" class="myclass" >
4  
5// Using ID to find value
6  
7$("#myid").val();
8
9// Using Class to find value
10
11$(".myclass").val();
12 

1//Get
2var bla = $('#txt_name').val();
3
4//Set
5$('#txt_name').val(bla);
6

1$("#textInput").val() // To get value of element textInput

1var str = $("#myInput"). val();