Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Javascript library for collecting form data, see wiki for examples
JavaScript
branch: master

This branch is 56 commits behind maxatwork:master

Fetching latest commit…

Cannot retrieve the latest commit at this time

Failed to load latest commit information.
example
src
.gitignore
README.markdown
license.txt

README.markdown

form2js

Convenient way to collect form data into JavaScript object.

Example: http://form2js.googlecode.com/hg/example/test.html

If you have any questions/suggestions or find out something weird or illogical - feel free to post an issue.

Because everythins is better with jQuery, jQuery plugin added, check out jquery.toObject.js =)

Details

Structure of resulting object defined by "name" attribute of form fields. See examples below.

This is not a serialization library. Library used in example for JSON serialization is http://www.json.org/js.html

All this library doing is collecting form data and putting it in javascript object (obviously you can get JSON/XML/etc string by serializing it, but it's not an only purpose).

Usage

form2object(rootNode, delimiter, skipEmpty, nodeCallback)

Values of all inputs under the rootNode will be collected into one object (skipping empty inputs if skipEmpty not false).

Objects/nested objects

Structure of resulting object defined in "name" attribute, delimiter is "." (dot) by default, but can be changed.

<input type="text" name="person.name.first" value="John" />
<input type="text" name="person.name.last" value="Doe" />

becomes

{
    "person" :
    {
        "name" :
        {
            "first" : "John",
            "last" : "Doe"
        }
    }
}

Arrays

Several fields with the same name with brackets defines array of values.

<label><input type="checkbox" name="person.favFood[]" value="steak" checked="checked" /> Steak</label>
<label><input type="checkbox" name="person.favFood[]" value="pizza"/> Pizza</label>
<label><input type="checkbox" name="person.favFood[]" value="chicken" checked="checked" /> Chicken</label>

becomes

{
    "person" :
    {
        "favFood" : [ "steak", "chicken" ]
    }
}

Arrays of objects/nested objects

Same index means same item in resulting array. Index doesn't specify order (order of appearance in document will be used).

<dl>
    <dt>Give us your five friends' names and emails</dt>
    <dd>
        <label>Email <input type="text" name="person.friends[0].email" value="agent.smith@example.com" /></label>
        <label>Name <input type="text" name="person.friends[0].name" value="Smith Agent"/></label>
    </dd>
    <dd>
        <label>Email <input type="text" name="person.friends[1].email" value="n3o@example.com" /></label>
        <label>Name <input type="text" name="person.friends[1].name" value="Thomas A. Anderson" /></label>
    </dd>
</dl>

becomes

{
    "person" :
    {
        "friends" : [
            { "email" : "agent.smith@example.com", "name" : "Smith Agent" },
            { "email" : "n3o@example.com", "name" : "Thomas A. Anderson" }
        ]
    }
}

Why not to use jQuery .serializeArray() or similar functions in other frameworks instead?

.serializeArray() works a bit different. It makes this structure from markup in previous example:

[
    { "person.friends[0].email" : "agent.smith@example.com" },
    { "person.friends[0].name" : "Smith Agent" },
    { "person.friends[1].email" : "n3o@example.com" },
    { "person.friends[1].name" : "Thomas A. Anderson" }
]

Custom fields

You can implement custom nodeCallback function (passed as 4th parameter to form2object()) to extract custom data:

<dl id="dateTest">
    <dt>Date of birth:</dt>
    <dd data-name="person.dateOfBirth" class="datefield">
        <select name="person.dateOfBirth.month">
            <option value="01">January</option>
            <option value="02">February</option>
            <option value="03">March</option>
            <option value="04">April</option>
            <option value="05">May</option>
            <option value="06">June</option>
            <option value="07">July</option>
            <option value="08">August</option>
            <option value="09">September</option>
            <option value="10">October</option>
            <option value="11">November</option>
            <option value="12">December</option>
        </select>
        <input type="text" name="person.dateOfBirth.day" value="1" />
        <input type="text" name="person.dateOfBirth.year" value="2011" />
    </dd>
</dl>

<script type="text/javascript">
    function processDate(node)
    {
        var dataName = node.getAttribute ? node.getAttribute('data-name') : '',
            dayNode,
            monthNode,
            yearNode,
            day,
            year,
            month;

        if (dataName && dataName != '' && node.className == 'datefield')
        {
            dayNode = node.querySelector('input[name="'+dataName + '.day"]');
            monthNode = node.querySelector('select[name="'+dataName + '.month"]');
            yearNode = node.querySelector('input[name="'+dataName + '.year"]');

            day = dayNode.value;
            year = yearNode.value;
            month = monthNode.value;

            return { name: dataName, value:  year + '-' + month + '-' + day};
        }

        return false;
    }

    var formData = form2object('dateTest', '.', true, processDate);
</script>

using processDate() callback formData will contain

{
    "person": {
        "dateOfBirth": "2011-01-12"
    }
}
Something went wrong with that request. Please try again.