var inheritPrototype = function(Child,Parent) {
    Child.prototype = new Parent();
}
var News = function() {
    this.children = [];
    this.element = null;
}
News.prototype = {

init : function() {

throw new Error('Nothing!');

},add : function() {

throw new Error('Nothing!');

},getElement : function() {

throw new Error('Nothing!');

}

}
var Container = function(id,parent) {

News.call(this);

this.id = id;

this.parent = parent;

this.init();

}
Container.prototype.init = function() {

this.element = document.createElement('ul');

this.element.id = this.id;

this.element.className = 'new-container';

}
Container.prototype.add = function(child) {

this.children.push(child);

this.element.appendChild(child.getElement());

return this;

}
Container.prototype.getElement = function() {

return this.element;

}
Container.prototype.show = function() {

this.parent.appendChild(this.element);

}

部分整体的层次结构

var news1 = new Container('news',document.body);
news1.add(

new Item('normal').add(

new IconNews('','','');

)

).add(

new Item('normal').add(

new IconNews('','');

)

).show();