select specific key value from json in ajax

Question

i have this codes in my test.php that ajax send request from index.php to this page.in this page i created an array and convert it to json and returned it finally:

<?php
$arr = array(
"status"=>200,
"result"=>array(
    "winner"=>"unknown",
    "options"=>array(
        "1"=>"first",
        "2"=>"second"
    ),"question"=>"are u ok?",
    "answer"=>"1"
)
);
$jsonArr = json_encode($arr);
echo $jsonArr;
?>

and in index.php i send request to test.php via ajax and i receive json . my problem is how can i alert just for example question from receive json from test.php.it alerts undefined

$.ajax({
    type:'post',
    url:'test.php',
    data:{},
    success:(function (response) {
    var x = jQuery.parseJSON(response);
        alert(x."question");
})
});

Answer 1

Try changing x."question" to x.result["question"] , or x.result.question .

Everything is an object in JavaScript. You can dereference any object in JavaScript by using [] (bracket) notation. If there are no special characters in the name, you can omit the brackets and string and just do object.property . Let's create an example.

 let response = JSON.stringify({ status: 200, result: { winner: "unknown", options: { "1": "first", "2": "second" }, question: "are u ok?", answer: 1 } }); // Now response is almost exactly what you get from the server console.log(response); let x = JSON.parse(response); console.log(x.result.question); 

 <p id="output"></p> 

Answer 2

尝试将x."question"更改为x.result.question 。