用jquery ajax传递json对象(passing json object with jquery ajax)

 试图回到这里的基础知识并通过ajax将JSON对象发送到我的php。 当我收到JSON错误时，我甚至无法访问该部分。 这是jquery代码： 
 
jQuery(".deletebutton").on("click", function() {

        var employees = [
        { "firstName":"John" , "lastName":"Doe" },
        { "firstName":"Anna" , "lastName":"Smith" },
        { "firstName":"Peter" , "lastName": "Jones" }
        ];

        var dataString = JSON.stringify(employees);

        // Lets put our stringified json into a variable for posting
        var postArray = {json:dataString};

        jQuery.ajax({
            type: 'POST',
            url: 'index.php?option=com_recordings&task=deletevideos&format=raw',
            data: postArray,
            dataType: 'json',
            success: function(data){
                if (data == "blah")
                    alert(data);

            }
        });
});
 
 我收到此错误（当我检查errorThrown ）：SyntaxError：JSON.parse：意外字符。 我用jsonlint.com查看它是有效的JSON。 我究竟做错了什么？ 

Trying to go back to basics here and send a JSON object via ajax to my php. I can't even get to that part as I get a JSON error. Here is the jquery code:
 
jQuery(".deletebutton").on("click", function() {

        var employees = [
        { "firstName":"John" , "lastName":"Doe" },
        { "firstName":"Anna" , "lastName":"Smith" },
        { "firstName":"Peter" , "lastName": "Jones" }
        ];

        var dataString = JSON.stringify(employees);

        // Lets put our stringified json into a variable for posting
        var postArray = {json:dataString};

        jQuery.ajax({
            type: 'POST',
            url: 'index.php?option=com_recordings&task=deletevideos&format=raw',
            data: postArray,
            dataType: 'json',
            success: function(data){
                if (data == "blah")
                    alert(data);

            }
        });
});
 
I get this error (when I check errorThrown): SyntaxError: JSON.parse: unexpected character. I checked with jsonlint.com that it is valid JSON. What am I doing wrong?

原文：https://stackoverflow.com/questions/14265826