How can i get the value of label in asp.net

through json function CheckLogin() {
var email1 = document.getElementById("txtLoginusername").value;
var pass = document.getElementById("txtLoginpassword").value;



// alert(email1 + " , " + pass);
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "../WebServices/CheckLoginService.asmx/LoginCh",
data: "{'email':'" + email1 + "','password':'" + pass + "'}",
dataType: "json",
success: function (response) {
var Result = response.d
if (Result == true) {
var url = 'http://localhost:51001/UI/RegisterUser.aspx';
$(location).attr('href', url);


}
// alert(Result);
},
error: function (result) {

var Result = result.d;
if (Result == false) {


alert(Result);
}

}
})

return false;
plz tell Me solution