Use AJAX to submit data from HTML form to WebMethod

So I’m taking in data from an HTML form and then using AJAX to send the data to a web method to then be sent to a sqlite database, but my AJAX call is failing. What did I mess up? Am I doing it correctly?

HTML Form

<form id="addForm" >
     <input type="text"  name="playername" id="playername" placeholder="Player"/> 
     <input type="text" name="points" id="points" placeholder="Points" />
     <input type="text" name="steals" id="steals" placeholder="Steals" />
     <input type="text" name="blocks" id="blocks" placeholder="Blocks" /> 
     <input type="text" name="assists" id="assists" placeholder="Assists" />
     <input type="text" name="mpg" id="mpg" placeholder="MPG" /> 
     <input type="text" name="shotpct" id="shotpct" placeholder="Shot %" />
     <input type="text" name="threepct" id="3pct" placeholder="3 %" /> 
     <input type="button" value="add player" id="addbtn" name="addbtn" />
     </form>

AJAX

 $("#addbtn").click(function () {
                var form = $("#addForm").serializeArray();
                $.ajax({
                    type: 'POST',
                    url: "players.aspx/addRow",
                    data: JSON.stringify(form),
                    dataType: 'json',
                    success: function () {
                        alert('success');
                    },
                    error: function () {
                        alert('failure');
                    }
                });
                    });

and the web method(not finished, was just testing to see if I was getting data)

[WebMethod]
        public static void addRow(object form)
        {
            var stuff = form;
        }

I’m still learning how to use a lot of this stuff so any help will be greatly appreciated.

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

Replace

type: 'POST',

with

method: 'POST',

dataType: ‘json’
is not needed since you’re not receiving data back. The data returned from the server, is formatted according to the dataType parameter.

Also remove JSON.stringify(form),this is already done with the .serialize();

Method 2

replace

JSON.stringify(form)

with

$('form').serializeArray()

So you will have:

$("#addbtn").click(function () {
                var form = $("form").serializeArray();
                $.ajax({
                    type: 'POST',
                    url: "players.aspx/addRow",
                    data: form,
                    dataType: 'json',
                    success: function () {
                        alert('success');
                    },
                    error: function () {
                        alert('failure');
                    }
                });
                    });

If you still get error. there might be a server side problem in the page you are calling. to make sure of that I suggest you use the ‘Advanced REST client’ witch is a Google Chrome extension and you can test posting values with it and see the result.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0