HTML中A标签的href设置为javascript:;和javascript:void(0);运行起来有什么区别？

Question

看到很多人都写的是javascript:void(0);，新浪微博也是，为什么不能直接写成javascript:;？

Answer 1

请参考下面链接中对于void的说明：[url]http://www.w3school.com.cn/js/pro_js_operators_unary.asp[/url]

针对楼主的问题，借用上面stackoverflow链接中的代码：
[code="javascript"]
Does not appear as a link, because there's no href
fn is called
fn is called
fn is called too!
[/code]
上面三个都是等价的。