Ajax is returning empty string

Below is my AJAX call to my test.php page. When returned, I'm getting a blank line.

    $.ajax({
        type: "POST",
        url: "test.php",
        data: 'action='+action+'&workOrderID='+value+'&wid='+wid+'&eid='+eid+'&lastName='+lastName+'&firstName='+firstName+'&finalComment='+comment,
        dataType: "json",
        error: function(xhr, ajaxOptions, thrownError) {
            console.log(data);
            alert(data);
            alert("Work Order NOT Updated.");       
        },
        success: function(data) {
            console.log(data);
            alert(data);
            alert("Work Order Updated.");
        }
    });

If needed, this is the page that it is being sent to. Currently, I am testing to make sure the AJAX is sending something.

> if($_POST['action'] === "update"){
>     return json_encode($_POST['workOrderID']);
> }

The variables in the AJAX are set, but I can not seem to find out what the issue is.

---

你应该这样做：

if($_POST['action'] === "update"){
    echo json_encode($_POST['workOrderID']);
}

链接地址: http://www.djcxy.com/p/55868.html

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