Is there a method to pass a JavaScript array as a JSON variable in my AJAX query?
Is there a method to pass a JavaScript array as a JSON variable in my AJAX query?
To accomplish this task, you will need to convert the javascript array into a string by utilizing the JSON object.
var myArray = [1, 2, 3];
var myJson = JSON.stringify(myArray); // "[1,2,3]"
....
xhr.send({
data:{
param: myJson
}
});
If the JSON object is not supported in older browsers, it is recommended to include Douglas Crockford's json2 library
Alternatively, if you are already using a library that provides methods for encoding/serializing, such as ExtJs with its Ext.encode, you can utilize that instead.
In the event that you are not utilizing a javascript library (such as jQuery or prototype.js) to handle this task for you, an alternative option would be to refer to the sample code provided by json.org.
To simplify the process, you can encode the array and include it in your AJAX request:
There are numerous other encoders available, as well as plugins for JQuery and Mootools to choose from :D
Consider this demonstration:
let numbers = [4, 5, 6];
$.ajax({
url: "fetch_data.php",
type: "POST",
data: {values:numbers},
dataType: "json",
async: true,
success: function(response){
console.log(response);
}
});
In fetch_data.php:
echo json_encode($_POST['values']);
The array is being transformed into an object using {values:numbers}, which is then passed as an argument to jQuery for string formatting in the query.
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