获取hashchange之前的哈希值

Question

假设我的HTML是

<a href="#one">One</a>
<a href="#two">Two</a>

和Js是

$(window).on("hashchange"){
alert(document.location.hash);
}

我想获得哈希值更改之前的哈希值.这可能吗？如果是,那怎么样？

Answer 1

用那个

$(window).on("hashchange", function(e){
    console.log(e.originalEvent.oldURL)
    console.log(e.originalEvent.newURL)
})?;

演示:http://jsbin.com/ulumil/

Answer 2

您必须跟踪最后一个哈希,例如:

var currentHash = function() {
  return location.hash.replace(/^#/, '')
}

var last_hash
var hash = currentHash()

$(window).bind('hashchange', function(event){
  last_hash = hash
  hash = currentHash()
  console.log('hash changed from ' + last_hash + ' to ' + hash)
});