Jquery Ajax post empty input value to the php

Question

I have a problem with Jquery Ajax posting.
Previously I was using

<form method="post" action="manageUserItem.php">....</form>

to post my input value and insert into database.
But when I try to change to jquery ajax function with this code:

$.validator.setDefaults({
        submitHandler: function() {
            var formData = new FormData($(this)[0]);    
                $.ajax({
                    url:'manageUserItem.php',
                    type: 'POST',
                    data: formData,
                    async: false,
                    beforeSend: function(){
                        if(confirm('Are you sure?'))
                            return true;
                        else
                            return false;
                    },
                    cache: false,
                    contentType: false,
                    processData: false
                }).done(function () {
                        //do something if you want when the post is successfully
                        if(!alert('New User Created.')){document.getelementbyclassname('form').reset()}
                }).fail(function () {
                        //if the post is failed show an error message if you want
                        alert('Some error occur. Please try again later.');
                });
                return false;
        }
    });

then my input field for name, userid and password become empty when insert into the database.
Is there anything wrong in my code?

Please give me some advice, because I'm still new to this.

Try new FormData(this[0]); maybe.

D4V1D
– D4V1D

2015-03-31 09:11:37 +00:00
Commented Mar 31, 2015 at 9:11 — D4V1D
– D4V1D, Commented Mar 31, 2015 at 9:11
Nope, not working either

Marcus Tan
– Marcus Tan

2015-03-31 09:15:11 +00:00
Commented Mar 31, 2015 at 9:15 — Marcus Tan
– Marcus Tan, Commented Mar 31, 2015 at 9:15
How about new FormData($('#yourForm'));?

D4V1D
– D4V1D

2015-03-31 09:16:57 +00:00
Commented Mar 31, 2015 at 9:16 — D4V1D
– D4V1D, Commented Mar 31, 2015 at 9:16

Brijesh Bhatt · Accepted Answer · 2015-03-31 09:15:40Z

2

You can try this:

var formData = new FormData(document.forms[0]);

answered Mar 31, 2015 at 9:15

Brijesh Bhatt

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Comments

xAqweRx · Accepted Answer · 2015-03-31 09:17:16Z

1

You have a problem here :

var formData = new FormData($(this)[0]);

In this context "this" - is submitHandler

Try use class or id of form like

   var formData = new FormData($(".myFormClass")[0]);

answered Mar 31, 2015 at 9:17

xAqweRx

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Comments

henrik123 · Accepted Answer · 2015-03-31 09:25:05Z

0

Try to serialize the data:

var formdata = $( "form" ).serialize();
console.log(formdata);

And to a console.log()

Output would look something like:

name=john_doe&user_id=1&password=my_passowrd

answered Mar 31, 2015 at 9:25

henrik123

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