从_Layout Page获取ViewPage html元素值

Question

我有以下视图页

@{

    Layout = "~/Views/Shared/_Layout.cshtml";
}

<div id="sample"></div>

_Layout Page

<div class="button" type="button"></button>

<script type="text/javascript">

    $(document).ready(function () {
        $(".button").click(function () {
            alert($("#sample").val());
         });
     }
</script>

如何在_LayoutPage中单击按钮时获取样本值，上方警告未显示值