Why when sending data over AJAX, do you have to JSON.stringify() your objects?

Question

JSON stands for javascript object notation (as I\'m sure you\'re aware), so why, when sending json via ajax do you need to turn it into a string to send it? Is it simply a f

Answer 1

When sending data to a web server, the data has to be a string.

That's why we are using JSON.stringify() function to convert data to string and send it via XHR request to the server.

        // Creating a XHR object 
        let xhr = new XMLHttpRequest();
        let url = "submit.php"; 

        // open a connection 
        xhr.open("POST", url, true); 

        // Set the request header i.e. which type of content you are sending 
        xhr.setRequestHeader("Content-Type", "application/json"); 

        // Converting JSON data to string 
        var data = JSON.stringify({ "name": name.value, "email": email.value }); 

        // Sending data with the request 
        xhr.send(data);