get json data by post function of jQuery

Question

I wanna to use post function of jQuery to send data to php code,the php code echo json.

$array = array(
           'error_no' => 0;
           'error' => 'error number 0'
              );
echo (json_encode($array));

that is my php code,now how should I get post somethings to this page and access error_no element in javascript var???

Arnaud Le Blanc · Accepted Answer · 2011-09-08 09:37:20Z

3

Add this before echo, so jQuery knows that this is JSON:

header('Content-Type: application/json');

And then in javascript:

$.post('/the/url.php', post_data, function(json) {
    alert(json.error_no);
});

answered Sep 8, 2011 at 9:37

Arnaud Le Blanc

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2 Comments

Moein Hosseini Over a year ago

post_data should be at json format? how should I convert it in javascript to json?

Arnaud Le Blanc Over a year ago

post_data should be either a javascript hash (like {param: value}, or a query string like param=value&param2=value2 or anything returned by .serialize())

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