jQuery ajax fetch data from PHP into a jQuery variable

Question

I need to receive the status of vote using ajax and php and jquery. Following is my code :

var VoteStatus= GetStatus() ;
var ID = $('#ID').val();

function GetStatus() {
    var res = '';

    $.ajax({
        type: "POST",
        data: {VoteID:ID} ,
        url: "/vote_status.php",
        async: false,       
        success: function(result) { res=result; } 
    });                  

    return res;
}

alert('Vote Status= ' + VoteStatus);

In my php file:

$VoteID = $_POST['VoteID'];
$Property = $_POST['Property'];



if ( $VoteID == 0 ) 
    echo 'No Vote provided - Property = '. $Property;

exit;

The alert box shows: Vote Status = No Vote Provided

Please help.

I have posted the VoteID, but the php file doesn't seem to receive it.

If the alert box says "No vote provided, then your php script should be working well. Check what this line var ID = $('#ID').val(); returns. — Chibuzo, May 20 '12 at 09:19
possible duplicate of [How can I use AJAX to fetch data and store it in javascript variables?](http://stackoverflow.com/questions/8570524/how-can-i-use-ajax-to-fetch-data-and-store-it-in-javascript-variables) - and the many, many, many, many, many, many, many, many others: http://stackoverflow.com/search?q=jQuery+ajax+fetch+data+from+PHP+into+a+jQuery+variable — hakre, May 20 '12 at 09:29

score 2 · Answer 1 · answered May 20 '12 at 09:22

2

The name of the POST variable needs to be in quotes, as in

data: {"VoteID":ID}

answered May 20 '12 at 09:22

msgmash.com

1,035
5
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data: {"VoteID":ID , "Property":prop} --- the property is shown as undefined in the alert box – sqlchild May 20 '12 at 09:33
@sqlchild: Please learn what json is. http://api.jquery.com/jQuery.ajax/ ; http://php.net/json – hakre May 20 '12 at 09:34
sir, what's the error in my code ? there's nothing but still its not working – sqlchild May 20 '12 at 09:36

score 2 · Accepted Answer · answered May 20 '12 at 09:36

2

Try the alert in here and check if its working

 $.ajax({
        type: "POST",
        data: {"VoteID":ID} ,
        url: "/vote_status.php",
        async: false,       
        success: function(result) { 
  alert(result); } 
    });

answered May 20 '12 at 09:36

coolguy

7,866
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Dear sir , the alert box shows this : "Vote Status = No Vote Provided - Property = undefined " – sqlchild May 20 '12 at 09:38
1

Are you getting the ID correctly execute this line and check if its not zero alert($('#ID').val()); – coolguy May 20 '12 at 09:40
yes I am getting and its non zero , i mean am getting the correct value – sqlchild May 20 '12 at 09:43
1

Do you provided quotes for VoteID ? "VoteID" – coolguy May 20 '12 at 09:45
1

IF you are using Firefox with firebug..just make this code change in the php file and see if its non-zero echo $_POST['VoteID'];exit; and look on your console for result – coolguy May 20 '12 at 09:46

score 2 · Answer 3 · answered May 20 '12 at 09:40

2

Try this and check jquery ajax manuals

$.ajax({
    type: "POST",        
    data:"VoteID=" + ID +"&secondparam=" + secondvalue,
    url: "/vote_status.php",
    async: false,       
    success: function(result) { alert(result); } 
});

answered May 20 '12 at 09:40

Justin John

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14
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THis is GET method ..so you need to change the type attribute to "GET" – coolguy May 20 '12 at 09:41

jQuery ajax fetch data from PHP into a jQuery variable

3 Answers3