自己动手实现jQuery Callbacks完整功能代码详解(5)

$.Topic( 'mailArrived' ).subscribe( function ( e )
        {
            console.log( 'Your have new email! ' );
            console.log( "mail title : " + e.title );
            console.log( "mail content : " + e.content );
        }
        );

$.Topic( 'mailArrived' ).publish( { title: 'mail title', content: 'mail content' } );

实现了其余的全部功能 ：callbacks.disable , callbacks.disabled,   callbacks.fired,callbacks.fireWith, callbacks.lock, callbacks.locked ,然后重构了下代码结构， 将实现放入了匿名函数内， 然后通过工厂方法 window.callbacks 返回实例，以免每次使用必须 new .

具体代码如下， 有兴趣和时间的可以对照jQuery版本的Callbacks对比下 ：

复制代码 代码如下:

( function ( window, undefined )
        {
            // Simulate jQuery.Callbacks object
            function Callbacks( options )
            {
                var ops = { once: false, memory: false, unique: false, stopOnFalse: false },
                    ar = [],
                    lastArgs = null,
                    firedTimes = 0,
                    _disabled = false,
                    _locked = false;

if ( typeof options === 'string' && options.trim() !== '' )
                {
                    var opsArray = options.split( /\s+/ );
                    for ( var i = 0; i < options.length; i++ )
                    {
                        if ( opsArray[i] === 'once' )
                            ops.once = true;
                        else if ( opsArray[i] === 'memory' )
                            ops.memory = true;
                        else if ( opsArray[i] === 'unique' )
                            ops.unique = true;
                        else if ( opsArray[i] === 'stopOnFalse' )
                            ops.stopOnFalse = true;
                    }
                }