jQuery form deserialize from serialize()-d string

form_deserialize.js

//Based on: https://stackoverflow.com/a/24441276/2953830
//Few things fixed by frzsombor
$.fn.deserialize = function(serializedString) {
    var $form = $(this);
    $form[0].reset();    // (A) optional
    serializedString = serializedString.replace(/\+/g, '%20'); // (B)
    var formFieldArray = serializedString.split('&');

    if (!serializedString) {
        return this;
    }

    // Loop over all name-value pairs
    $.each(formFieldArray, function(i, pair){
        var nameValue = pair.split('=');
        var name = decodeURIComponent(nameValue[0]); // (C)
        var value = decodeURIComponent(nameValue[1]);
        // Find one or more fields
        var $field = $form.find('[name="' + name + '"]');

        // Checkboxes and Radio types need to be handled differently
        if ($field[0].type === 'radio' || $field[0].type === 'checkbox')
        {
            var $fieldWithValue = $field.filter('[value="' + value + '"]');
            var isFound = ($fieldWithValue.length > 0);
            // Special case if the value is not defined; value will be "on"
            if (!isFound && value === 'on') {
                $field.first().prop('checked', true);
            } else {
                $fieldWithValue.prop('checked', isFound);
            }
        } else { // input, textarea
            $field.val(value);
        }
    });

    return this;
};