javascript - 如何将来自服务器的数据设置为这种动态形式？

Question

我正在使用this bootsnipp 用于 BootStrap.JS 创建动态字段并从表单捕获数据。

保存后，假设我从服务器以键值对的形式返回 JSON 数据，我如何构建这个动态表单以便用户可以再次更新它。

任何示例片段都会有帮助。

Answer 1

你所要做的就是编写一些数据传播方法，相当简单，这是一个快速入门(来自服务器的数据存储在变量 requestData 中，我还删除了不必要的代码):

var requestData = [{"name":"phone0", "value":"890890809"},{"name":"fax1", "value":"1111"},{"name":"skype2", "value":"anonononono"},{"name":"email3", "value":"huhuhuhu@huhuhu.pl"}];

function capitalize(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}

(function ($) {
    $(function () {

        var addFormGroup = function (event) {
            [...]
        };

        var removeFormGroup = function (event) {
            [...]
        };

        var selectFormGroup = function (event) {
            [...]
        }

        var countFormGroup = function ($form) {
            [...]
        };

        var collectData = function(ele) {
            [...]
        }

        var propagateData = function(data){
            var $formGroup = $('body').find('.form-group');

            $.each(data, function(k,v){
                var $formGroupClone = $formGroup.clone();
                $formGroupClone.find('.btn-add').toggleClass('btn-success btn-add btn-danger btn-remove').html('–');
                $formGroupClone.find('input').val(v.value);
                $formGroupClone.find('.concept').text(capitalize(v.name.replace(/[0-9]/g, '')));
                $formGroupClone.find('.input-group-select-val').val(v.name.replace(/[0-9]/g, ''));
                $formGroupClone.insertBefore($formGroup);
            });

        }

        $(document).on('click', '.btn-add', addFormGroup);
        $(document).on('click', '.btn-remove', removeFormGroup);
        $(document).on('click', '.dropdown-menu a', selectFormGroup);
        propagateData(requestData);
        $('#data').click(function(e){
            collectData('.cache');
            e.preventDefault();
        });
    });
})(jQuery);

编辑

好吧，重置表单的所有代码都隐藏在传播数据中，您只需反转它，在您的 html 中您应该添加类似 <a href="#" class="btn btn-warning form-reset" style="margin: 10px;">Reset</a> 的内容然后完整的js在这里:

var requestData = [{"name":"phone0", "value":"890890809"},{"name":"fax1", "value":"1111"},{"name":"skype2", "value":"anonononono"},{"name":"email3", "value":"huhuhuhu@huhuhu.pl"}];

function capitalize(string) {
    return string.charAt(0).toUpperCase() + string.slice(1);
}


(function ($) {
    $(function () {

        var addFormGroup = function (event) {
            event.preventDefault();

            var $formGroup = $(this).closest('.form-group');
            var $multipleFormGroup = $formGroup.closest('.multiple-form-group');
            var $formGroupClone = $formGroup.clone();

            $(this)
                .toggleClass('btn-success btn-add btn-danger btn-remove')
                .html('–');

            $formGroupClone.find('input').val('');
            $formGroupClone.find('.concept').text('Phone');
            $formGroupClone.insertAfter($formGroup);

            var $lastFormGroupLast = $multipleFormGroup.find('.form-group:last');
            if ($multipleFormGroup.data('max') <= countFormGroup($multipleFormGroup)) {
                $lastFormGroupLast.find('.btn-add').attr('disabled', true);
            }
        };

        var removeFormGroup = function (event) {
            event.preventDefault();

            var $formGroup = $(this).closest('.form-group');
            var $multipleFormGroup = $formGroup.closest('.multiple-form-group');

            var $lastFormGroupLast = $multipleFormGroup.find('.form-group:last');
            if ($multipleFormGroup.data('max') >= countFormGroup($multipleFormGroup)) {
                $lastFormGroupLast.find('.btn-add').attr('disabled', false);
            }

            $formGroup.remove();
        };

        var selectFormGroup = function (event) {
            event.preventDefault();

            var $selectGroup = $(this).closest('.input-group-select');
            var param = $(this).attr("href").replace("#","");
            var concept = $(this).text();

            $selectGroup.find('.concept').text(concept);
            $selectGroup.find('.input-group-select-val').val(param);

        }

        var countFormGroup = function ($form) {
            return $form.find('.form-group').length;
        };
/* collectData Function~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~/ 
This function given a group of elements (in classic selector format) will assign each element 
the values of the closest fields as a unique name and the user entered value (if any.)
Use the console to see it gather data.
*/
        var collectData = function(ele) {
            var $tgt = $(ele);
            $tgt.each(function(index) {
// $tgt == $(this)
                var $fieldNames = $(this).next('.input-group-select-val').val();
                var $fieldValues = $(this).closest('.form-group').find('.form-control').val();
// Including index to each $fieldName in order to make each key/value pair unique.
                $(this).attr('name', $fieldNames+index);
                console.log('name: '+$(this).attr('name'));
                $(this).val($fieldValues);
                console.log('value: '+$(this).val());
              });
        }

        var propagateData = function(data){
            var $formGroup = $('body').find('.form-group');

            $.each(data, function(k,v){
                var $formGroupClone = $formGroup.clone();
                $formGroupClone.find('.btn-add').toggleClass('btn-success btn-add btn-danger btn-remove').html('–');
                $formGroupClone.find('input').val(v.value);
                $formGroupClone.find('.concept').text(capitalize(v.name.replace(/[0-9]/g, '')));
                $formGroupClone.find('.input-group-select-val').val(v.name.replace(/[0-9]/g, ''));
                $formGroupClone.insertBefore($formGroup);
            });
        }

        var clearData = function(elms){
            $(elms).not(':last').remove();
            var $el = $(elms);
            $el.find('input').val('');
            $el.find('.concept').text('Phone');
            $el.find('.input-group-select-val').val('phone');
        }

        $(document).on('click', '.btn-add', addFormGroup);
        $(document).on('click', '.btn-remove', removeFormGroup);
        $(document).on('click', '.dropdown-menu a', selectFormGroup);
        propagateData(requestData);
// Clicking the #data button will call the collectData('.cache') function.
        $('#data').click(function(e){
            collectData('.cache');
            e.preventDefault();
        });

        $('.form-reset').click(function(e){
            clearData('.multiple-form-group');
            e.preventDefault();
        });
    });
})(jQuery);