I am trying to make a page that allows users to select 8 checkboxes from a total of 25.
Im wondering, how to detect the exact order in which they check them. I am using a plain html front page that will be verified by a form action pointing to a php page.
Im trying to get a result like (checkbox1,checkbox2,checkbox6,checkbox3,checkbox7,etc) for eight checkboxes, and the exact order in which they were clicked.
I think I have found what I am looking for,Im not too sure, but Im having trouble implementing it.
This is what I have so far, I guess my question is, what type of php do I need to gather this info once a user has submitted the form.
For the form I have:
<form id="form1" name="form1" method="post" action="check_combination.php">
<label id="lblA1"></label>
<input name="checkbox1" type="checkbox" value="a1" onclick="setChecks(this)"/> Option 1
<label id="lblA2"></label>
<input name="checkbox1" type="checkbox" value="a2" onclick="setChecks(this)"/> Option 2
<label id="lblA3"></label>
<input name="checkbox1" type="checkbox" value="a3" onclick="setChecks(this)"/> Option 3
<label id="lblA4"></label>
<input name="checkbox1" type="checkbox" value="a4" onclick="setChecks(this)"/> Option 4
</form>
For the Javascript I have:
<script type="text/javascript">
<!--
//initial checkCount of zero
var checkCount=0
//maximum number of allowed checked boxes
var maxChecks=8
function setChecks(obj){
//increment/decrement checkCount
if(obj.checked){
checkCount=checkCount+1
}else{
checkCount=checkCount-1
}
//if they checked a 4th box, uncheck the box, then decrement checkcount and pop alert
if (checkCount>maxChecks){
obj.checked=false
checkCount=checkCount-1
alert('you may only choose up to '+maxChecks+' options')
}
开发者_运维问答}
//-->
</script>
<script type="text/javascript">
<!--
$(document).ready(function () {
var array = [];
$('input[name="checkbox1"]').click(function () {
if ($(this).attr('checked')) {
// Add the new element if checked:
array.push($(this).attr('value'));
}
else {
// Remove the element if unchecked:
for (var i = 0; i < array.length; i++) {
if (array[i] == $(this).attr('value')) {
array.splice(i, 1);
}
}
}
// Clear all labels:
$("label").each(function (i, elem) {
$(elem).html("");
});
// Check the array and update labels.
for (var i = 0; i < array.length; i++) {
if (i == 0) {
$("#lbl" + array[i].toUpperCase()).html("first");
}
if (i == 1) {
$("#lbl" + array[i].toUpperCase()).html("second");
}
}
});
});
//-->
</script>
I have gotten the part that only allows 8 checkboxes to be checked, but Im stuck as to what I need to do to actually parse the data once it has been submitted to a page with a name like check_combination.php.
I would appreciate any help
- create a hidden input field with the order
- update this input field when something changes
- you'll have the order ready to be processed by PHP
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