<input class="book_now_modal BClick" type="text" id="destinationFrom_modal" name="destinationFrom_modal" placeholder="@ViewBag.AmritsarList[0].Destination">

$(".AClick").click(function () {
            //$(".BClick").attr("placeholder"," ");
            var s = parseInt($(this).attr('id'));
            var neededVAl = "@@ViewBag.AmritsarList"+"["+s+"]"+".Destination";
            alert(neededVAl);
            var b = $(".BClick");
            $(this).attr("placeholder",neededVAl);
        });

var neededVAl = "@@ViewBag.AmritsarList"+"["+s+"]"+".Destination";

var jsObject = @Html.Raw(Json.Encode(ViewBag.AmritsarList));
$(".AClick").click(function () {
    var s = parseInt($(this).attr('id'));
    var neededVAl = jsObject[s].Destination;
    alert(neededVAl);
    $(this).attr("placeholder",neededVAl);
});