前端js/後端cs互相傳值

https://leofunlife3.blogspot.com/2019/01/jscs.html

前端js/後端cs互相傳值


//新增一個hidden變數, 前後端pass value可透過此變數(常用手法)

<input type="hidden" id="abc" runat='server' />



//新增一個js, 把要傳給後端的參數寫到hidden變數

<script type="text/javascript">

function setvalue() {

  var a = document.getElementById("abc");

  a.value = "這是js要給後端的參數";

}

</script>


test.aspx.cs(後端)


Label1.Text = "承接js傳過來的參數是 "+ Request.Params["abc"];

後端CS傳值給前端JS 

test.aspx.cs(後端)

protected void Page_Load(object sender, EventArgs e) {

  form1.InnerHtml = "";

  for (int i = 0; i < 10; i++) {

    form1.InnerHtml += "<button onclick='send(" + i + ")'>click</button>";

  }

}

test.aspx(前端)

<script type="text/javascript">

  function send(id) {

    alert(id);

  }


</script>