What is the best way to transform JSON or an array from an AJAX responseText into a JavaScript array?

Question

What is the best way to transform JSON or an array from an AJAX responseText into a JavaScript array?

I recently implemented ajax into my code, and it is working perfectly. It provides me with either JSON or an array as the output. Here is the snippet of code I used:

xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","http://map_ajax_control.php",false);
xmlhttp.send();

var test = xmlhttp.responseText;
alert(test);

The variable 'test' contains the JSON or array data.

Now, I am looking to store this received data in a JavaScript array. However, I am facing some challenges when trying to decode the JSON data into a JavaScript array using the following code:

var output = new Array();  
output = json_decode(xmlhttp.responseText);

Unfortunately, this code does not seem to be producing any output.
Can you please advise on how to achieve these two tasks successfully?

javascript ajax json

Answer 1

Answer №1

Many web browsers have built-in support for the JSON.parse() function, making it easy to use:


obj = JSON.parse(xmlhttp.responseText);
alert(obj.length);

If a browser does not support this function, you can include the json2.js library to implement it.

Answer 2

Many web browsers have built-in support for the JSON.parse() function, making it easy to use:


obj = JSON.parse(xmlhttp.responseText);
alert(obj.length);

If a browser does not support this function, you can include the json2.js library to implement it.

Answer 3

Answer №2

Give this a shot:

let array = xmlhttp.responseText.split(',');

If that doesn't fix your issue, try using json_encode(your array); in your PHP code and in JavaScript, use

myData = eval("(" + xmlHttp.responseText + ")");

.

I recommend following this method:

Encode the data you want to send by utilizing a PHP JSON binding on the server side and decode it using a JavaScript JSON library. like so:

let myObject = eval('(' + myJSONtext + ')');

or

let myObject = JSON.parse(myJSONtext, reviver);

Keep in mind: Make sure to include the json2 JavaScript file in your solution.

Encountering issues with storing values in an Array from PHP to AJAX

Answer 4

Give this a shot:

let array = xmlhttp.responseText.split(',');

If that doesn't fix your issue, try using json_encode(your array); in your PHP code and in JavaScript, use

myData = eval("(" + xmlHttp.responseText + ")");

.

I recommend following this method:

Encode the data you want to send by utilizing a PHP JSON binding on the server side and decode it using a JavaScript JSON library. like so:

let myObject = eval('(' + myJSONtext + ')');

or

let myObject = JSON.parse(myJSONtext, reviver);

Keep in mind: Make sure to include the json2 JavaScript file in your solution.

Encountering issues with storing values in an Array from PHP to AJAX

Answer 5

Answer №3

JSON stands for JavaScript Object Notation, a lightweight data-interchange format. It is recommended to parse JSON with the guidance of experts like Sudhir. Alternatively, you can utilize jQuery.parseJSON method.

For performing AJAX requests, I highly recommend employing a reliable library such as jQuery.

Explore this link for more information on jQuery's ajax function

Answer 6

JSON stands for JavaScript Object Notation, a lightweight data-interchange format. It is recommended to parse JSON with the guidance of experts like Sudhir. Alternatively, you can utilize jQuery.parseJSON method.

For performing AJAX requests, I highly recommend employing a reliable library such as jQuery.

Explore this link for more information on jQuery's ajax function

What is the best way to transform JSON or an array from an AJAX responseText into a JavaScript array?

Answer №1

Answer №2

Answer №3

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