Simple jQuery data form binder script

FormBinder.js

function print(msg) {
    if (console.log) {
        console.log(msg);
        return;
    }
    alert(msg);
}
var FormBinder = function (id, submitFunction) {
    if (!jQuery) {
        print('jQuery not loaded');
        return;
    }
    var InputHandler = {
        Check: function (name, clickFunction) {
            var $checker = $('input[name="' + name + '"]');
            var checkerType = $checker.attr('type').toLowerCase();
            if (checkerType !== 'radio' && checkerType !== 'checkbox') {
                print(name + 'is not radio type');
                return;
            }

            function checkFilter() {
                return $checker.filter(':checked');
            }

            var $checked = checkFilter();
            $checker.on('click change', function (evt) {
                if (clickFunction) {
                    clickFunction();
                }
                $checked = checkFilter();
            });

            return {
                get: function () {
                    return $checked;
                },
                getValue: function () {
                    switch (checkerType) {
                        case 'radio':
                            var result = $checked.val();
                            return result;
                        case 'checkbox':
                            var result = [];
                            $checked.each(function () {
                                result.push($(this).val());
                            });
                            return result;
                    }

                },
                getName: function () {
                    return name;
                }
            }
        },
        Select: function (name, clickFunction) {
            var $checker = $('select[name="' + name + '"]');

            if ($checker.get(0).tagName.toLowerCase() !== 'select') {
                print(name + 'is not select-option type');
                return;
            }

            $checker.on('click change', function (evt) {
                if (clickFunction) {
                    clickFunction();
                }
            });

            return {
                get: function () {
                    return $checker;
                },
                getValue: function () {
                    return $checker.val();
                },
                getName: function () {
                    return name;
                }
            }
        },
        Text: function (type, name, clickFunction) {
            var $text;

            if (name === undefined || name === null) {
                throw alert('type="' + type + '"\'s name is missing. please check name attribute.');
            }

            switch (type) {
                case 'textarea':
                    $text = $('textarea[name="' + name + '"]');
                    if ($text.get(0).tagName.toLowerCase() !== 'textarea') {
                        print(name + 'is not text type');
                        return;
                    }
                    break;
                case 'text':
                    $text = $('input[name="' + name + '"]');
                    if ($text.attr('type').toLowerCase() !== 'text') {
                        print(name + 'is not text type');
                        return;
                    }
                    break;
            }

            function value() {
                var t = $.trim($text.val())
                return (t !== undefined && t !== null) ? t : null;
            }


            if (clickFunction) {
                $text.on('click', function (evt) {
                    clickFunction();
                });
            }
            return {
                get: function () {
                    return $text;
                },
                getValue: function () {
                    return value();
                },
                getName: function () {
                    return name;
                }
            }
        }
    }
    var $form = $('#' + id);

    var url = $form.attr('action');
    var method = $form.attr('method');
    var enctype = $form.attr('enctype');

    if (!$form) {
        $form = $('form[name="' + id + '"]');
        if (!$form) {
            print(id + ' is not form\'s id or name');
            return;
        }
    }

    $form.submit(function (evt) {
        if (submitFunction) {
            submitFunction($(this), evt);
        }
    });

    var $inputs = $form.find('input, select, textarea');

    var forms = {
        checkbox: [],
        radio: [],
        text: [],
        textarea: [],
        select: []
    };

    function isNameExist(name) {
        var result = false;
        for (var i in forms) {
            for (var j in forms[i]) {
                if (forms[i][j].getName() === name) {
                    result = true;
                    break;
                }
            }
            if (result) {
                break;
            }
        }
        return result;
    }

    $inputs.each(function (i, elem) {
        var type = $(this).attr('type');
        var tagName = $(this).get(0).tagName.toLowerCase();
        var name = $(this).attr('name');
        if (!isNameExist(name)) {
            switch (tagName) {
                case 'select':
                    forms.select.push(InputHandler.Select(name));
                    break;
                case 'textarea':
                    forms.textarea.push(InputHandler.Text('textarea', name));
                    break;
                case 'input':
                    switch (type) {
                        case 'text':
                            forms.text.push(InputHandler.Text('text', name));
                            break;
                        case 'radio':
                            forms.radio.push(InputHandler.Check(name));
                            break;
                        case 'checkbox':
                            forms.checkbox.push(InputHandler.Check(name));
                            break;
                    }
                    break;
            }
        }
    });

    function getJson() {
        var js = {};
        var names = [];
        var values = [];

        for (var i in forms) {
            var input = forms[i];
            for (var j in input) {
                if (input[j].length < 1 || input[j].getValue() === undefined || input[j].getValue() === null || input[j].getValue().length < 1)
                    continue;
                var name = input[j].getName();
                var value = input[j].getValue();
                js[name] = function (jClone) {
                    return function () {
                        return value;
                    }();
                }(j);

            }

        }
        return js;
    }
    return {
        get: function (typename) {
            if (!typename) {
                return forms;
            } else {
                return forms[typename];
            }
        },
        toJson: function () {
            return getJson();
        },
        toString: function () {
            return JSON.stringify(getJson());
        },
        handlers: function () {
            return InputHandler;
        },
        replaceHandler: function (name, func) {
            for (var i in InputHandler) {
                if (i === name) {
                    InputHandler[name] = func;
                }
            }
        }
        /*,
         addFunction: function (name, func) {
         this[name] = func;
         return this;
         }*/
    }
}