js的对象属性的两种访问方式和对象的内存理解
js对象属性有两种访问方式，代码如下：
<html><head><script language="javascript"> function Person(){}; var a = new Person(); a.age = 10; a.name = "拉拉"; var b = a; b.name = "小赖"; window.alert(b.age + "b名字:" + b.name + "a名字:" + a.name); b = null; window.alert(a.age + "a名字:" + a.name);</script></head><body> </body></html>