Question

$('a').click(function (e) {
    e.preventDefault();

    var newLocation = this.href;

    $('body').fadeOut(250, newPage);

    function newPage() {
        window.location = newLocation;
    }
});

目的是在点击链接时淡出页面。问题出在这样的链接上：

<a href='javascript:history.back()'>Link</a>

通常，当href是'javascript：history.back（）'时，它会回到上一页的滚动位置，这就是我想要的。使用此代码，它将转到页面顶部。我该如何解决这个问题？

Answer 1

history.back是一个功能。你必须把它称为一个函数。通过分配到window.location返回导航历史记录不起作用。

根据点击链接的href，让您的代码表现不同。

$('a').click(function (e) 
{
    e.preventDefault();
    var newLocation = this.href;
    $('body').fadeOut(250, newPage);

    function newPage() 
    {
        if(newLocation == "javascript:history.back()")
        {
          history.back();
        }
        else
        {
           window.location = newLocation;
        }
    }
});

完整的测试集：

Caller.html

<html>
<head><title>Caller</title></head>
<body>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>
<div>XXXXXXXXXXXXX</div>

<a href="Callee.html">Go to Callee</a>

</body>
</html>

Callee.html

<html>
<head><title>Callee</title></head>
<body>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <a href="javascript:history.back()">Go back</a>

<script>
$('a').click(function (e) 
{
    e.preventDefault();
    var newLocation = this.href;
    $('body').fadeOut(250, newPage);

    function newPage() 
    {
        if(newLocation == "javascript:history.back()")
        {
          history.back();
        }
        else
        {
           window.location = newLocation;
        }
    }
});
</script>

  </body>
</html>

如何返回上一页并在动画后恢复滚动位置？

1 个答案: