Having trouble getting AJAX to work with posting JSON data? Unsure of what steps to take next?

Hey there, can you take a look at my code? It seems to be throwing an error when I try to run it.

I'm still learning, so any help would be greatly appreciated!

<script type="text/javascript">

    $(function() {
        $('#btnRegister').click(function () {
            var name = $('#inputFname').val();
            var family = $('#inputLname').val();
            var username = $('#inputUname').val();
            var password = $('#inputPassword').val();
            var mobile = $('#inputMobile').val();
            var address = $('#inputEmail').val();
            if (name !== '' && family !== '') {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "Registeration.aspx.cs/InsertUser",
                    data: "{'FirstName':'" + name + "' , 'LastName' : '" + family + "' , 'UserName' :'" + username + "' , 'Password':'" + password + "', 'Mobile': '" + mobile + "','Address': '" + address + "'}",
                    dataType: "json",
                    success: function(data) {
                        $('#inputFname').value('a');
                        $('#inputLname').value('a');
                        $('#inputUname').value('a');
                        $('#inputPassword').value('a');
                        $('#inputMobile').value('a');
                        $('#inputEmail').value('a');
                        alert("Registration Complete");
                    },
                    error: function(result) {
                        alert("Registration Failed!");
                    }
                });
            } else {
                alert("Please fill out all fields!");
                return false;
            }
        });
    })   

</script>
javascriptc#asp.netjsonajax

Answer №1

Ensure that you are using JSON data format instead of a string

data: "{'FirstName':'" + name + "' , 'LastName' : '" + family + "' , 'UserName' :'" + username + "' , 'Password':'" + password + "', 'Mobile': '" + mobile + "','Address': '" + address + "'}"

To correct this, update the format to JSON,

data: {
    FirstName:name, 
    LastName:family, 
    UserName: username, 
    Password:password, 
    Mobile:mobile,
    Address:address
    }

Your code snippet should appear as follows

$(function () {
    $('#btnRegister').click(function () {
        var name = $('#inputFname').val();
        var family = $('#inputLname').val();
        var username = $('#inputUname').val();
        var password = $('#inputPassword').val();
        var mobile = $('#inputMobile').val();
        var address = $('#inputEmail').val();
        if (name !== '' && family !== '') {
            $.ajax({
                type: "POST",
                contentType: "application/json; charset=utf-8",
                url: "Registeration.aspx.cs/InsertUser",
                data: {
                   FirstName:name, 
                   LastName:family, 
                   UserName: username, 
                   Password:password, 
                   Mobile:mobile,
                   Address:address
                },
                dataType: "json",
                success: function (data) {
                    $('#inputFname').value('a');
                    $('#inputLname').value('a');
                    $('#inputUname').value('a');
                    $('#inputPassword').value('a');
                    $('#inputMobile').value('a');
                    $('#inputEmail').value('a');
                    alert("Registration Complete");
                },
                error: function (result) {
                    alert("Registration Failed!");
                }
            });
        } else {
            alert("Please fill all fields!");
            return false;
        }
    });
})

Answer №2

When your ajax request encounters an error, it typically means that the response URL is having trouble processing. It's a good practice to log the error message so that we can identify and troubleshoot the issue.

error: function(result) {
    console.log(result);
}

I agree with Banujan's suggestion as well. Another approach would be to utilize the .serialize() method to gather all input values from a form:

var data = $( "form" ).serialize();

Learn more about .serialize() here

Update:

$(function() {
        $('#btnRegister').click(function () {
            var name = $('#inputFname').val();
            var family = $('#inputLname').val();
            var username = $('#inputUname').val();
            var password = $('#inputPassword').val();
            var mobile = $('#inputMobile').val();
            var address = $('#inputEmail').val();
            if (name !== '' && family !== '') {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "Registeration.aspx.cs/InsertUser",
                    data: $( "#formId" ).serialize(),
                    success: function(data) {
                        $('#inputFname').value('a');
                        $('#inputLname').value('a');
                        $('#inputUname').value('a');
                        $('#inputPassword').value('a');
                        $('#inputMobile').value('a');
                        $('#inputEmail').value('a');
                        alert("Registration Complete");

                    },
                    error: function(result) {
                        console.log(result)
                        //The result variable in this instance contains the response from the website, which usually indicates an error of some sort
                    }
                });
            } else {
                alert("Please complete all fields!");
                return false;
            }
        });

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