javascript无法从文本框中获取字符串

Question

我正在尝试从Textbox ASP.NET控件获取日期字符串，但没有成功。 我的代码是：

function countdown() {
    now = new Date();
    var biddate = $("#InitiateDate1").val();
    kickoff = Date.parse(biddate);
    diff = kickoff - now;...

Answer 1

它是$('<%=InitiateDate1.ClientID%>').val();

Answer 2

试试

function countdown() {
    now = new Date();
    var biddate = document.getElementById('<%=InitiateDate1.ClientID%>').value
    kickoff = Date.parse(biddate);