How to add checkbox id and insert in textarea? - php

Question

I'm Prasath and I'm new to AJAX. I am working on seat layout project, I find difficult to get seat fare and seat number at same time. Kindly some one help me to solve my problem. Here is my code
<div id="mydiv">
<input type="checkbox" name="seat1" id="A1" value="250" />
<br />
<input type="checkbox" name="seat2" id="A2" value="250" />
<br />
<input type="checkbox" name="seat3" id="A3" value="300" />
<br />
<input type="checkbox" name="seat4" id="SL1" value="250" />
<br />
<input type="checkbox" name="seat5 " id="SL2"
value="250" />
<br />
<input type="checkbox" name="seat6" id="SL3" value="300" />
<br />
<input type="checkbox" name="seat7 " id="SL4" value="300" />
<textarea id="seats"></textarea>
<textarea id="total_amount"></textarea>
</div>
I want result as
if checkbox "Seatl, seat3 and seat7" are checked I want result as
<textarea id="seats">A1,A3,SL4</textarea>
<textarea id="total_amount">750</textarea>
Kindly help me to solve this.
Thanks in advance.

Answer 1

You can do it just with plain javascript (no need of jQuery):
function myAudis(){
var inputs = document.getElementById("mydiv").getElementsByTagName("input");
var seats=[], total_amount=0, c=0;
for(var i=0;i<inputs.length;i++){
if(inputs[i].type!="checkbox"){continue;}
if(inputs[i].checked){seats[c++]=inputs[i].id; total_amount+=parseInt(inputs[i].value);}
}
document.getElementById("seats").value=seats;
document.getElementById("total_amount").value=total_amount;
}
You can call it like this:
<button type="button" onclick="myAudis()">Calculate</button>
Hope it helps..

Answer 2

$(document).ready(function(e) {
var ids = "";
$(':checkbox').bind('change',function(){
var th = $(this), id = th.attr('id');
//alert(th);
if(th.is(':checked')){
ids = ids+id+",";
$('#seats').val(ids);
}
else
{
ids = ids.replace(id+",","");
$('#seats').val(ids);
}
});
});

Answer 3

First add a common class for the checkbox like seatsNos
Add this in your on submit function or if event want it in every checkbox click add add check checked event
var total = 0;
var textarea = '';
$('.seatsNos:checked').each(function () {
var e = $(this);
var textarea = ',' + e.attr('id');
total = total + e.val();
});
$('#seats').val(textarea );
Note : Jquery needed