<div>
what about a different approach:<br />
<br />
&lt;html&gt;&lt;head&gt;&lt;title&gt;test&lt;/t<wbr />itle&gt;<br />
<br />
&lt;script langauge=&quot;JavaScript&quot;&gt;<br />
function GoPrevious() {<br />
&nbsp; if (history.length != 0) <br />
&nbsp; &nbsp; window.history.back();<br />
&nbsp; else<br />
&nbsp; &nbsp; window.location.reload();<br />
}<br />
&lt;/script&gt;<br />
&lt;/head&gt;<br />
<br />
&lt;body&gt;<br />
&lt;form name=&quot;theform&quot;&gt;<br />
&lt;input type=&quot;button&quot; value=&quot;Previous&quot; onclick=&quot;javascript:GoPrev<wbr />ious();&quot;&gt;<br />
&lt;/form&gt;<br />
<br />
&lt;/body&gt;&lt;/html&gt;
</div>


what about a different approach:

<html><head><title>test</title>

<script langauge="JavaScript">
function GoPrevious() {
  if (history.length != 0)
    window.history.back();
  else
    window.location.reload();
}
</script>
</head>

<body>
<form name="theform">
<input type="button" value="Previous" onclick="javascript:GoPrevious();">
</form>

</body></html>

<div>
Thanks for the answer, but I don't want the browser page to change. I need to it to receive information. It's for a server error handler (404, 500, etc) and if they clicked a link and got a 404, I want it to report the page that they came from (history.previous). If they typed it in (no history) and got the error, I want it to display the page URL they typed in (window.location).
</div>


Thanks for the answer, but I don't want the browser page to change. I need to it to receive information. It's for a server error handler (404, 500, etc) and if they clicked a link and got a 404, I want it to report the page that they came from (history.previous). If they typed it in (no history) and got the error, I want it to display the page URL they typed in (window.location).

<div>
** &nbsp;document.referrer.value ** &nbsp; 
</div>


<div>
<div class="content wysiwyg-content">
Here's the objective of the code: If this page was accessed by a link, the errorurl is set to the page that accessed it (history.previous) if this page was accessed without a previous link, errorurl is set to the current URL.<br />
<br />
errorurl = history.previous<br />
if(errorurl==undefined) errorurl = window.location<br />
<br />
Thanks
</div>
</div>


Here's the objective of the code: If this page was accessed by a link, the errorurl is set to the page that accessed it (history.previous) if this page was accessed without a previous link, errorurl is set to the current URL.

errorurl = history.previous
if(errorurl==undefined) errorurl = window.location

Thanks

What's wrong with this code? (history.previous)

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.