JS类的prototype指向到新对象后，其原型为新对象么？求教

[kinghome]

var viewBasic = {
	container:"#data-box",
	options:{
		option:null,
		product_type:'pc',
		list_type:'harvesting',
		resource_type:'tmr',
		Period_time:null
	}
};

function tickerPage(){
	this.url = '';
	this.columns=['AUTO','LIFE'];
	this.players=[null,null];
	this.scrolls=[null,null];
};

tickerPage.prototype = viewBasic;
tickerPage.prototype.init = function(){alert('AAAA')};

function statusPage(){
	this.beforeStart = null;
	this.afterEnd = null;
	this.url='';
}
statusPage.prototype = viewBasic;
statusPage.prototype.init = function(){alert('BBBB')}


function view(){
	this.ticker = new tickerPage()
	this.status = new statusPage()
};
view.prototype = viewBasic;
view.prototype.show = function(){
	var o = this;
	switch(o.options.option){
		case "ticker":
			o.ticker.init();
		break;
		case "status":
			o.status.init();
		break;
	}
}
window.onload=function(){
	viewBasic.options.option = "ticker";
	var myview = new view();
		myview.show();	
}

为何这里输出的是 BBB 而不是 AAA

[functionsub]

因为tickerPage.prototype跟statusPage.prototype都是指向viewBasic的引用。 你对tickerPage.prototype跟statusPage.prototype扩展init的时候等于给viewBasic进行扩展。 以最后一次为准。