Question

我正在尝试创建我自己的第一个jQuery函数来重新排序表中的某些行。

该函数工作得很好，我只是不确定如何触发我应该能够在设置对象中设置的回调函数。这也是制作jQuery函数的方法吗？代码可以在这里看到：http://jsfiddle.net/fcHQh/

功能是：

(function( $ ){
    $.fn.reorder = function(options) {

        var settings = {
            'up': '.up',
            'down': '.down',
            'timeout': 1000,
            'url': '',
            'success': null,
            'error': null
        };

        var methods = {
            init : function(element) {
                $(settings.up + ',' + settings.down).on('click', function (event) {
                    event.preventDefault();
                    var row = $(this).parents('tr:first');
                    if ($(this).is(settings.up)) {
                        row.insertBefore(row.prev());
                    } else {
                        row.insertAfter(row.next());
                    }
                    tools.delay(function() { methods.sort(element) }, settings.timeout);
                });
            },
            sort : function(element) {
                $(element).find('tr').find('input:hidden').each(function () {
                    element.priorities.push($(this).val());
                }); 
                if (settings.url) {
                    methods.callback(element);
                }
            },
            callback : function(element) {
                            // THIS SHOULD ONLY BE FIRED IF CALLBACK IS DEFINED?
                $.ajax({
                    type: 'GET',
                    url: settings.url,
                    data: { priorities: element.priorities.join(',') },
                    success: function() {
                    // FIRE THE 'settings.success' if its set
                    },
                    error: function() {
                    // FIRE THE 'settings.error' if its set 
                    }
                });
            }
        };

        var tools = {
            delay : (function () {
                var timer = 0;
                return function (callback, ms) {
                    clearTimeout(timer);
                    timer = setTimeout(callback, ms);
                };
            })()
        } 

        return this.each(function() {
            if (options) $.extend(settings, options);
            this.priorities = [];
            methods.init(this);
        });
    };
})( jQuery );

Answer 1

我建议您有一个默认对象，并将其与您的选项合并：

var defaults = {
  up: '.up',
  down: '.down',
  timeout: 1000,
  url: '',
  success: function() {},
  error: function() {}
};

var settings = $.extend({}, defaults, options);

// ...
callback: function() {
  $.ajax({
    success: settings.success,
    error: settings.error
  });
},
// ...

功能内的消防回调

1 个答案: