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How do I convert all elements of my form to a JavaScript object?
The.serializeArray method creates a JavaScript array of objects, ready to be encoded as a JSON string. It operates on a jQuery collection of form s and/or form controls. The controls can be of several types: 1. How it was said, this solution is good for new browsers (with native JSON support) for older ones this solution won`t work. More about JSON support in browsers you can read here. Jun 24, 2017 1 – serialize: jQuery form serialize into Object. This is common method to use send form values as a serialized object to server. The.serialize method creates a text string in standard URL-encoded notation. It can act on a jQuery object that has selected individual form controls. Jquery how to deserialize json object duplicate. The json variable will contain the de-serialized json object. Browse other questions tagged jquery asp.net. I know there's plenty of ways to convert forms into JSON objects and sure.serialize and.serializeArray work great in most cases and are mostly intended to be used, but I think this whole idea of writing a form as an XML structure with meaningful names and converting it into a well-formed JSON object is worth the try, also the fact you can.
I'd like to have some way of automatically building a JavaScript object from my form, without having to loop over each element. I do not want a string, as returned by
$('#formid').serialize();
, nor do I want the map returned by $('#formid').serializeArray();
48 Answers
12 next
serializeArray
already does exactly that. You just need to massage the data into your required format:Watch out for hidden fields which have the same name as real inputs as they will get overwritten.
Current source is on GitHub and bower.
$ bower install jquery-serialize-object
The following code is now deprecated.
The following code can take work with all sorts of input names; and handle them just as you'd expect.
For example:
Usage
The Sorcery (JavaScript)
A fixed version of Tobias Cohen's solution. This one correctly handles falsy values like
0
and '
. And a CoffeeScript version for your coding convenience:
I like using
Array.prototype.reduce
because it's a one-liner, and it doesn't rely on Underscore.js or the like:This is similar to the answer using
Array.prototype.map
, but you don't need to clutter up your scope with an additional object variable. One-stop shopping.IMPORTANT NOTE: Forms with inputs that have duplicate
name
attributes are valid HTML, and is actually a common approach. Using any of the answers in this thread will be inappropriate in that case (since object keys must be unique).All of these answers seemed so over the top to me. There's something to be said for simplicity. As long as all your form inputs have the name attribute set this should work just jim dandy.
If you are using Underscore.js you can use the relatively concise:
There really is no way to do this without examining each of the elements. What you really want to know is 'has someone else already written a method that converts a form to a JSON object?' Something like the following should work -- note that it will only give you the form elements that would be returned via a POST (must have a name). This is not tested.
Ok, I know this already has a highly upvoted answer, but another similar question was asked recently, and I was directed to this question as well. I'd like to offer my solution as well, because it offers an advantage over the accepted solution: You can include disabled form elements (which is sometimes important, depending on how your UI functions)
Here is my answer from the other SO question:
Initially, we were using jQuery's
serializeArray()
method, but that does not include form elements that are disabled. We will often disable form elements that are 'sync'd' to other sources on the page, but we still need to include the data in our serialized object. So serializeArray()
is out. We used the :input
selector to get all input elements (both enabled and disabled) in a given container, and then $.map()
to create our object.Note that for this to work, each of your inputs will need a
name
attribute, which will be the name of the property of the resulting object.That is actually slightly modified from what we used. We needed to create an object that was structured as a .NET IDictionary, so we used this: (I provide it here in case it's useful)
I like both of these solutions, because they are simple uses of the
$.map()
function, and you have complete control over your selector (so, which elements you end up including in your resulting object). Also, no extra plugin required. Plain old jQuery.![Date Date](/uploads/1/2/6/0/126062433/284259882.jpg)
This function should handle multidimensional arrays along with multiple elements with the same name.
I've been using it for a couple years so far:
One-liner (no dependencies other than jQuery), uses fixed object binding for function passsed to
map
method. What it does?
suitable for progressive web apps (one can easily support both regular form submit action as well as ajax requests)
With all Given Answer there some problem which is.., If input name as array like
name[key]
, but it will generate like this For Example : If i have form like this.
Then It will Generate Object like this with all given Answer.
But it have to Generate like below,anyone want to get like this as below.
Then Try this below js code.
Simplicity is best here. I've used a simple string replace with a regular expression, and they worked like a charm thus far. I am not a regular expression expert, but I bet you can even populate very complex objects.
Using maček's solution, I modified it to work with the way ASP.NET MVC handles their nested/complex objects on the same form. All you have to do is modify the validate piece to this:
This will match and then correctly map elements with names like:
And
I found a problem with Tobias Cohen's code (I don't have enough points to comment on it directly), which otherwise works for me. If you have two select options with the same name, both with value=', the original code will produce 'name':' instead of 'name':[',']
I think this can fixed by adding ' || o[this.name] '' to the first if condition:
the simplest and most accurate way i found for this problem was to use bbq plugin or this one (which is about 0.5K bytes size).
it also works with multi dimensional arrays.
There is a plugin to do just that for jQuery, jquery.serializeJSON. I have used it successfully on a few projects now. It works like a charm.
I prefer this approach because: you don't have to iterate over 2 collections, you can get at things other than 'name' and 'value' if you need to, and you can sanitize your values before you store them in the object (if you have default values that you don't wish to store, for example).
Use like so:
Only tested in Firefox.
Turn anything into an object (not unit tested)
The output of test:
on
will yield:
I found a problem with the selected solution.
When using forms that have array based names the jQuery serializeArray() function actually dies.
I have a PHP framework that uses array-based field names to allow for the same form to be put onto the same page multiple times in multiple views. This can be handy to put both add, edit and delete on the same page without conflicting form models.
Since I wanted to seralize the forms without having to take this absolute base functionality out I decided to write my own seralizeArray():
Please note: This also works outside of form submit() so if an error occurs in the rest of your code the form won't submit if you place on a link button saying 'save changes'.
Also note that this function should never be used to validate the form only to gather the data to send to the server-side for validation. Using such weak and mass-assigned code WILL cause XSS, etc.
I had the same problem lately and came out with this .toJSON jQuery plugin which converts a form into a JSON object with the same structure. This is also expecially useful for dynamically generated forms where you want to let your user add more fields in specific places.
The point is you may actually want to build a form so that it has a structure itself, so let's say you want to make a form where the user inserts his favourite places in town: you can imagine this form to represent a
<places>..</places>
XML element containing a list of places the user likes thus a list of <place>..</place>
elements each one containing for example a <name>..</name>
element, a <type>..</type>
element and then a list of <activity>..</activity>
elements to represent the activities you can perform in such a place. So your XML structure would be like this:How cool would it be to have a JSON object out of this which would represent this exact structure so you'll be able to either:
- Store this object as it is in any CouchDB-like database
- Read it from your $_POST[] server side and retrive a correctly nested array you can then semantically manipulate
- Use some server-side script to convert it into a well-formed XML file (even if you don't know its exact structure a-priori)
- Just somehow use it as it is in any Node.js-like server script
Jquery Serialize Json
OK, so now we need to think how a form can represent an XML file.
Of course the
<form>
tag is the root
, but then we have that <place>
element which is a container and not a data element itself, so we cannot use an input tag for it.Here's where the
<fieldset>
tag comes in handy! We'll use <fieldset>
tags to represent all container elements in our form/XML representation and so getting to a result like this:As you can see in this form, we're breaking the rule of unique names, but this is OK because they'll be converted into an array of element thus they'll be referenced only by their index inside the array.
At this point you can see how there's no
name='array[]'
like name inside the form and everything is pretty, simple and semantic.Now we want this form to be converted into a JSON object which will look like this:
To do this I have developed this jQuery plugin here which someone helped optimizing in this Code Review thread and looks like this:
Logonui application error windows 10. Hey guys,I have get a Toshiba satellite pro c850 using Windows 10. Randomly after a restart of my computer it went to a green screen with the loading dots spinning, and a box saying:LogonUI.exe - Application errorThe exception breakpointA breakpoint has been reached.(0x80000003) occurred in the application at location 0x00007FFD380413AF.Click on OK to terminate the programI tried Ctrl alt del saying that:Runtime error!Program: C:WINDOWSsystem32LogonUI.exeThis application has requested the Runtime to terminate it in an unusual way.I press Ctrl alt esc and the box disappears but the loading dots still spinning.I can't do anything else than that.
I also made this one blog post to explain this more.
This converts everything in a form to JSON (even radio and check boxes) and all you'll have left to do is call
I know there's plenty of ways to convert forms into JSON objects and sure
.serialize()
and .serializeArray()
work great in most cases and are mostly intended to be used, but I think this whole idea of writing a form as an XML structure with meaningful names and converting it into a well-formed JSON object is worth the try, also the fact you can add same-name input tags without worrying is very useful if you need to retrive dynamically generated forms data.I hope this helps someone!
I coded a form to a multidimensional JavaScript object myself to use it in production. The result is https://github.com/serbanghita/formToObject.js.
I like samuels version, but I believe it has a small error. Normally JSON is sent as
{'coreSKU':'PCGUYJS','name_de':'whatever',..
NOT as
[{'coreSKU':'PCGUYJS'},{'name_de':'whatever'},..
so the function IMO should read:
and to wrap it in data array (as commonly expected, too), and finally send it as astringApp.stringify( {data:App.toJson( '#cropform :input' )} )
For the stringify look at Question 3593046 for the lean version, at json2.js for the every-eventuality-covered version. That should cover it all :)
For a quick, modern solution, use the JSONify jQuery plugin. The example below is taken verbatim from the GitHub README. All credit to Kushal Pandya, author of the plugin.
Given:
Javascript Serialize Json
Running:
Produces:
If you want to do a jQuery POST with this JSON object:
Another answer
FormData: https://developer.mozilla.org/en-US/docs/Web/API/FormData
I wouldn't use this on a live site due to XSS attacks and probably plenty of other issues, but here's a quick example of what you could do:
protected by Josh CrozierMay 30 '14 at 20:18
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Active2 years, 2 months ago
This question already has an answer here:
- Convert form data to JavaScript object with jQuery 48 answers
I want to do some pre-server-validation of a form in a Backbone.js model. To do this I need to get the user input from a form into usable data.I found three methods to do this:
var input = $('#inputId').val();
var input = $('form.login').serialize();
var input = $('form.login').serializeArray();
Unfortunately, none of the provide a good reabable and developable JSON object which I require. I already looked through several questions on Stack Overflow, but I found only some extra libraries.
Doesn't Underscore.js, the current jQuery or Backbone.js provide a helper method?
I can't imagine there is no request for such a function.
HTML
JavaScript
Outputs
Backbone.js model
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marked as duplicate by Tushar Gupta - curioustushar jqueryOct 15 '14 at 15:13
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
15 Answers
chim6,61222 gold badges3939 silver badges5252 bronze badges
Maciej PyszyńskiMaciej Pyszyński6,88733 gold badges1818 silver badges2727 bronze badges
You can do this:
see this: http://www.json.org/js.html
vsync55.8k3939 gold badges179179 silver badges247247 bronze badges
Mohammad AdilMohammad Adil40.4k1515 gold badges7777 silver badges102102 bronze badges
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
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Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
MaertzMaertz4,59222 gold badges1414 silver badges2525 bronze badges
I know this doesn't meet the helper function requirement, but the way I've done this is using jQuery's $.each() method
Then I can pass loginFormObject to my backend, or you could create a userobject and save() it in backbone as well.
ryandayryanday
I couldn't find an answer that would solve this:
This calls for this object:
So I had to write a serializer of my own that would solve this:
Maybe it will help somebody.
Code Uniquely5,43833 gold badges2525 silver badges3434 bronze badges
user3664916user3664916
If you do not care about repetitive form elements with the same name, then you can do:
I am using Underscore.js here.
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
MitarMitar4,41522 gold badges3838 silver badges5959 bronze badges
Trying to solve the same problem (validation without getting into complex plugins and libraries), I created jQuery.serializeJSON, that improves serializeArray to support any kind of nested objects.
This plugin got very popular, but in another project I was using Backbone.js, where I would like to write the validation logic in the Backbone.js models. Then I created Backbone.Formwell, which allows you to show the errors returned by the validation method directly in the form.
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
tothemariotothemario3,62122 gold badges3232 silver badges3131 bronze badges
If you are sending the form with JSON you must remove [] in the sending string. You can do that with the jQuery function serializeObject():
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
user1990497user1990497
Jquery Serialize Javascript Object To Json
Here is what I use for this situation as a module (in my formhelper.js):
It kind of sucks that I can't seem to find another way to do what I want to do.
This does return this JSON for me:
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
JohnstonJohnston9,50299 gold badges5050 silver badges9494 bronze badges
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
muZkmuZk
Using jQuery and avoiding
serializeArray
, the following code serializes and sends the form data in JSON format:rbarriusorbarriuso
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
19861986
Well, here's a handy plugin for it: https://github.com/macek/jquery-serialize-object
The issue for it is:
Moving ahead, on top of core serialization, .serializeObject will support correct serializaton for boolean and number values, resulting valid types for both cases.
![Create json object jquery Create json object jquery](/uploads/1/2/6/0/126062433/931036220.png)
Look forward to these in >= 2.1.0
YaxingYaxing
Found one possible helper:
and for people who don't want to get in contact with forms at all:https://github.com/powmedia/backbone-forms
I will take a closer look at the first link and than give some feedback :)
dev.pusJquery Object To Json String
dev.pusJquery Serialize Json Object File
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