我需要通过单击一个按钮来调用一个函数。按钮位于 aspx 页面上，功能位于 .js 页面上。这是我用于按钮的代码：
<asp:LinkButton ID="lnkBTNSubmit" runat="server" CssClass="buttonlink"
OnClick="lnkBTNSubmit_Click" OnClientClick="onBtnSubmitClick();">Submit</asp:LinkButton>
这是我的功能：
function onBtnSubmitClick() {
var startDate = document.getElementById('<%= txtATrendStartDate.ClientID %>').value;
var endDate = document.getElementById('<%= txtATrendEndDate.ClientID %>').value;
checkDateRange(startDate, endDate);
}
function checkDateRange(start, end) {
// Parse the entries
var startDate = Date.parse(start);
var endDate = Date.parse(end);
// Make sure they are valid
if (isNaN(startDate)) {
alert("The start date provided is not valid, please enter a valid date.");
return false;
}
if (isNaN(endDate)) {
alert("The end date provided is not valid, please enter a valid date.");
return false;
}
// Check the date range, 86400000 is the number of milliseconds in one day
var difference = (endDate - startDate) / (86400000 * 7);
if (difference < 0) {
alert("The start date must come before the end date.");
return false;
}
return true;
}
请注意，该函数位于另一个 .js 页面上。