javascript - 在经典asp中点击按钮调用多个函数

Question

如何在确认删除按钮上调用多个函数？

以下是我需要调用的函数:

    function ifnull() {
                if (selected_devices_area = "") {
                    window.alert("Please select devices!");
                }
            }

    function submitForm() {

                if (confirm("Do you really want to delete these devices?")) {
                    //document.location.href = '/site/service/device/DeleteMultipleDevices.asp?siteId=<%=iSiteId%>&serviceId=<%=iServiceId%>';

                    document.device.submit();
                    window.alert('Devices successfully deleted.');

                }

按钮的 HTML:

        <tr>    
            <td><a href="/site/service/serviceinfo_main.asp?siteId=<%=iSiteId%> &crType=Delete Multiple Devices&addCr=yes&crId=<%=iCrId %>"class="btnLink">&laquo; Back</a></td>
            <td class="tdRight"><a href="javascript:ifnull();javascript:submitForm();" class="btnLink">Confirm Deletion &raquo;</a></td>
        </tr>
    </table>

我正在调用这样的函数，但它不起作用。

Answer 1

您不需要两次添加“javascript:”前缀。而不是

<a href="javascript:ifnull();javascript:submitForm();" class="btnLink">

做

<a href="javascript:ifnull();submitForm();" class="btnLink">

但更重要的是，如果我理解正确的话，如果 ifnull() 未通过 - 您就不想提交表单。如果是这样，请将您的 ifnull() 函数更改为:

function ifnull() {
   if (selected_devices_area = "") {
       window.alert("Please select devices!");
       return true
   } else {
       return false
   }
}

然后您可以将 submitForm() 函数更改为

function submitForm() {
   if (!ifnull() && confirm("Do you really want to delete these devices?")) {
        document.device.submit();
        // You should generate "alert('Devices successfully deleted.');" from server side
        // since as of now you don't know that is really happend
}

并将您的调用更改为

<a href="submitForm();" class="btnLink">

这样逻辑上更加简洁。