如果用户没有选中任何复选框,我想提醒用户,然后返回表单 在他们检查了至少一个复选框后,进入下一页 我怎么能这样做?
<input type="checkbox" name="pay[]" value="
<?php
echo $DateArr[$record_count].";";
echo $invoiceArr[$record_count].";";
echo $TotalArr[$record_count].";";
echo $amount_dueArr[$record_count];
?>
" onClick="checkTotal()"/>
<td ALIGN="right" ><input type="submit" name="submit" value="Continue" onMouseOver="CheckBoxStatus()"></td>
javascript:
function CheckBoxStatus()
{
var checkbox_status = document.getElementsByName("pay[]").value;
if (checkbox_status = ";;;")
{
alert("Please select at least one to proceed!");
return false;
}
else
{
alert("Continue!");
return true;
}
}
如果用户未选中,则至少选中一个复选框,提醒消息并返回表单
然后
<form name="payform" method="POST" action="payment.php" onSubmit=" CheckBoxStatus()">
如果用户没有选中任何复选框,我该如何留在表格中?
可能是这样的:
function CheckBoxStatus()
{
if (document.getElementsByName("pay[]").checked == true)
{
document.forms["payform"].submit();
return true;
}
else
{
alert("Please select at least one invoice to proceed!");
document.forms["payform"].reset();
return false;
}
}
我可以这样做:
`
function CheckBoxStatus()
{
var status=$("pay[]").attr('checked');
if (status=true)
{
//if(document.getElementsByName("pay[]").checked) {
return true;
}
else {
alert("Please select at least one to proceed!");
return false;
}
}`
答案 0 :(得分:0)
使用jQuery
var $checked = $("input:checked");
if($checked.length == 0) {
alert("Please select at least one to proceed!");
}
答案 1 :(得分:0)
HTML有点混乱。有几件事......
<td>
标记。它看起来没有目的。onsubmit
而不是onMouseOver
。要检查是否选中了复选框,请将您的功能更改为以下内容。
function checkBoxStatus {
if(document.getElementsByName("pay[]").checked) {
return true;
}
else {
alert("Please select at least one to proceed!");
return false;
}
}
EDIT;忘了提醒
答案 2 :(得分:0)
试试这个:
<input id="ipay" type="checkbox" name="pay[]" value="
<?php
echo $DateArr[$record_count].";";
echo $invoiceArr[$record_count].";";
echo $TotalArr[$record_count].";";
echo $amount_dueArr[$record_count];
?>"
/>
<td ALIGN="right" ><input type="submit" name="submit" value="Continue"></td>
<form id="pform" name="payform" method="POST" action="payment.php">
使用Javascript:
$(document).ready(function() {
$('#pform').submit(function(e) {
var paycheck = $('#ipay').attr('checked');
if(paycheck != true or paycheck != 'checked') {
alert('Please check at least one option.');
e.preventDefault();
}
});
});
答案 3 :(得分:0)
您可以这样做:
<html>
<head>
<title>Verify Checkbox</title>
<script type="text/javascript">
function verifyCheckboxSelected(form) {
var theForm = document.forms[form];
var valid = false;
for( var i=0; i < theForm.length; i++ ) {
if(theForm.elements[i].checked) {
valid = true;
}
}
if (!valid) {
alert('You must select at least one checkbox')
return false;
}
}
</script>
</head>
<body>
<form name="myForm" onSubmit="return verifyCheckboxSelected(this.name)">
<input type="checkbox" name="myCheckBoxes[]"/>Checkbox A</br>
<input type="checkbox" name="myCheckBoxes[]"/>Checkbox B</br>
<input type="checkbox" name="myCheckBoxes[]"/>Checkbox C</br>
<input type="submit" value="submit" />
</form>
</body>
</html>