来自帖子的 Jquery 响应

Question

我有问题......我在 php 中有一个监听器脚本可以执行以下操作:

  if ($count != 1) {echo 'no';} else { echo "yes";}

因此它会回显"is"或“否”，具体取决于任务是否成功 在我的页面上有这个:

   jConfirm('Are you sure you want to delete this publisher?', 'Delete publisher', function (r) {
    if (r) $.post('includes/publishers/delete-publisher.php?publisherid=' + publisherid, 
    function(data) {
            if (data == 'no') {
            $.jGrowl('Error - PUBLISHER WAS ALREDY DELETED !');
            alert("Data Loaded: " + data);
            } else {
            $(element).parents('tr').remove();
            $.jGrowl('Publisher deleted');       
            alert("Data Loaded: " + data);
            }
        });
});

问题是尽管delete-publisher.php回显“否”(我看到它在警报框中回显)-JQuery总是处理这个，就好像响应是"is"!？我是否遗漏了一些明显的东西？

Answer 1

使用 JSON 将响应发送回 JavaScript，可以省去很多麻烦。做这样的事情(未经测试):

PHP 端:

header('Content-type: application/json');
if ($count != 1) {
    echo json_encode(array('success'=>false));
} else { 
    echo json_encode(array('success'=>true))
}

JS 端:

jConfirm('Are you sure you want to delete this publisher?', 'Delete publisher', function (r) {
if (r) $.post('includes/publishers/delete-publisher.php?publisherid=' + publisherid, 
function(data) {
        if (data.success == false) {
            $.jGrowl('Error - PUBLISHER WAS ALREDY DELETED !');
            alert("Data Loaded: " + data);
        } else {
            $(element).parents('tr').remove();
            $.jGrowl('Publisher deleted');       
            alert("Data Loaded: " + data);
        }
    }, 'json');

});

这样你也可以将错误消息传递回 JS。

您还应该习惯使用Firebug for Firefox之类的工具，这样您就可以查看网络流量的详细信息，并发布参数、响应头等，设置JS断点以帮助调试。