jQuery插件，从其他方法调用函数 [英] Jquery Plugins, calling functions from other methods

问题描述

就像这里的许多其他类似问题一样，我正在编写我的第一个jQuery插件. 它旨在采用一个select元素，并用可单击的list元素替换这些选项，以用作样本. 我的主要功能运行良好，但是我需要添加调用另一个方法的功能，这将禁用某些选项. 我的问题是，这样做时，我需要绑定一些点击元素，然后取消绑定其他元素.

Like so many other similar questions on here, I am writing my first jQuery plugin. It's intended to take a select element and replace the options with clickable list elements, to be used as swatches. I've got the main functionality working great, but I need to add the ability to call another method, which will disable certain options. My problem is that when doing this, I need to bind some click elements and unbind others.

当前，我的原始绑定包含在我的'init'方法内的函数中.我需要能够从另一个禁用"方法调用该函数. 所以这是一些代码:

Currently my original binding is contained in a function inside my 'init' method. I need to be able to call that function from another 'disable' method. So here's some code:

(function($){

var methods = {

    // Init method
        init    : function(options) {
            // Set options
            var
                defaults = {
                        clickCallback:  function(){} // Define empty function for click callback
                  }
            ,   settings = $.extend({}, defaults, options)


            // Function to bind options
            function fnBindOptions(var1, var2, var3) {
                // Stuff to bind elements

                    // Hit the click callback
                    settings.clickCallback.call(this); 

            }   

            return this.each(function() {

                // Check that we're dealing with a select element
                if(element.is('select')) {

                    // Loop through the select options and create list items for them
                    $('option', element).each(function() {

                        // Stuff to create list elements

                        // Bind click handler to the new list elements
                        fnBindOptions(var1, va2, var3);
                    });

                }

            });

            // return 
            return this();              
        }


    // Disable buttons method
    ,   disable : function(options) {

            // I need to access fnBindOptions from here
            $(elementID).children('li').removeClass('disabled').each(function(){
                fnBindOptions(var1, var2, var3);
            });

        }
};

这是我的问题:在禁用每个选项之前，我需要在每个选项上调用bind函数-但是我无法从disable方法中访问fnBindOptions-并且因为fnBindOptions包含来自"settings"变量的回调，因此我可以也可以将其移出"init"方法之外.

Here's my problem: I need to call the bind function on each option before disabling it - but I can't access fnBindOptions from within the disable method - and because fnBindOptions includes a callback from the 'settings' variable, I can't move it outside of the 'init' method either.

那么，有人在这里有什么建议吗?

So, does anyone have any advice here?

谢谢！

推荐答案

一种解决方法是将defaults，settings和bindOptions函数放在methods对象(或范围更广)，并据此进行引用:

One way to solve this is to put your defaults, settings and bindOptions function in the methods object (or another object in the broader scope) and reference them accordingly:

var methods = {
    defaults: {
        clickCallback: function() {}
    },
    settings: {},

    bindOptions: function(var1, var2, var3) {
        // Stuff to bind elements
        // Hit the click callback
        methods.settings.clickCallback.call(this);
    },

    // Init method
    init: function(options) {
        methods.settings = $.extend({}, methods.defaults, options);

        return this.each(function() {
            if (element.is('select')) {
                $('option', element).each(function() {
                    // Stuff to create list elements
                    // Bind click handler to the new list elements
                    methods.bindOptions(var1, va2, var3);
                });
            }
        });
    },

    // Disable buttons method
    disable: function(options) {
        $(elementID).children('li')
                    .removeClass('disabled')
                    .each(function() {
            methods.bindOptions(var1, var2, var3);
        });
    }
};

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