Ajax请求不使用dataType“jsonp”或“json”

Question

I'm trying to use JSON as a return type for an Ajax request (using jQuery) but my code always results in an error. I've tried changing the MIME type between json and jsonp but to no avail.

I'm also not sure if I'm formatting the data: part correctly. I understand that I need to wrap all of its information in a string for JSON, but I don't know if it's correct.

$.ajax({

    type: "POST",
    url: '-----',
    dataType: "jsonp",
    data: '{"jobtitle":"job"}',

    beforeSend:function(){ },


    success: function(data){
        var data = $.parseJSON(data);           

    },
    error: function(){
        alert("error with Ajax request");
    }

});

Edit: Here is my server-side code. I don't know how to return valid JSON from this.

<?php 


$jobtitle = $_POST["jobtitle"];
$city = $_POST["city"];
$state = $_POST["state"];



$url = "http://www.indeed.com/jobs?q=". $jobtitle ."&l=". $city ."%2C". $state;
$document = new DOMDocument;

$html = file_get_contents($url);
$document ->loadHTML($html);
$xpath= new DOMXPath($document);

$results = $xPath->query('//div[@id="searchCount"]');

$string = "";

if ($results){
    for ($i=0; $i < $results->length; $i++) {
            $node = $results->item($i)->textContent;


    }
    $exp = explode(" ", $node);

    print "Number of jobs: <b>".$exp[5]. "</b>";


}

Answer 1

Take the single quotes out of this

 data: '{"jobtitle":"job"}',

to make it

 data: {"jobtitle":"job"},

Your datatype should probably be json. JSON with padding (jsonp) is for cross domain ajax(ish) requests.

and in your success callback data will be a json object not a json string so

 var data = $.parseJSON(data);  

Is not needed.