这个jQuery Ajax / PHP设置有什么问题？

I'm building a search app which uses Ajax to retrieve results, but I'm having a bit of trouble in how exactly to implement this.

I have the following code in Javascript:

if (typeof tmpVariable == "object"){
    // tmpVariable is based on the query, it's an associative array
    // ie: tmpVariable["apple"] = "something" or tmpVariable["orange"] = "something else"
    var sendVariables = {};
    sendVariables = JSON.stringify(tmpVariable);
    fetchData(sendVariables);
}

function fetchData(arg) {
    $.ajaxSetup ({
        cache: false
    });

    $.ajax ({
        type: "GET",
        url: "script.php",
        data: arg,
    });
}

And within script.php:

<?php
    $data = json_decode(stripslashes($_GET['data']));
    foreach($data as $d){
        echo $d;
    }
?>

What is it that I'm doing wrong?

Thanks.

Your PHP script is expecting a GET var called 'data'. With your code you're not sending that.

Try this:

if (typeof tmpVariable == "object"){

    var data = {data : JSON.stringify(tmpVariable)}; // Added 'data' as object key

    fetchData(data);
}

function fetchData(arg) {

    $.ajax ({
        type: "GET",
        url: "script.php",
        data: arg,
        success: function(response){

            alert(response);

            $("body").html(response); // Write the response into the HTML body tag
        }
    });
}