everest33

jQuery.Event.prototype = { 
    preventDefault: function() { 
        // 取消事件默認行為 
    }, 
    stopPropagation: function() { 
        // 取消事件向上冒泡 
    }, 
    stopImmediatePropagation: function() { 
        this.isImmediatePropagationStopped = returnTrue; 
        this.stopPropagation(); 
    }, 
    isDefaultPrevented: returnFalse, 
    isPropagationStopped: returnFalse, 
    isImmediatePropagationStopped: returnFalse 
};