JS onclick="history.go(-1) only if under my domain

javascript php joomla
ol30cean0 picture ol30cean0 · Oct 17, 2013 · Viewed 15.2k times · Source

I have a Joomla site, and I have the following problem, I need a "Back to search page" function on my product details page, and I am using this code after some changes according to replies to my initian question:

<br/><a href="" onclick="if (document.referrer.indexOf(window.location.host) !== -1) alert('true'); { history.go(-1); return false; } else { window.location.href = 'mysite.com.br'; }"><?php echo JText::_('VOLTAR'); ?></a>

Now, if a Visitor comes from another site directly to my product page and click this, he will be redirected to homepage of my site, and this is ok, but if I in a search page of my site, click on a product page and then click on the back to search link, the visitor is also redirected to my homepage, which is not good, it should be redirected to previous page, which was his own search page.

Is there any way to modify this code in order to accomplish something like:

if visitor comes from my search page or from anywhere in my site, by clicking this he will be redirected to the previous page, and if a visitor came from outside of my site, by clicking this he will be redirected to my homepage?

Answer

hexacyanide picture hexacyanide · Oct 17, 2013

You can use document.referrer and compare it to window.location.host.

if (document.referrer.split('/')[2] === window.location.host)
if (document.referrer.indexOf(window.location.host) !== -1)

So your HTML will look like this:

<a href="" onclick="if (document.referrer.indexOf(window.location.host) !== -1) { history.go(-1); return false; } else { window.location.href = 'website.com'; }"><?php echo JText::_('VOLTAR'); ?></a>

Related questions

How to integrate AngularJs App inside Joomla

I am new to both Angular as well as Joomla that I am learning atm. What I am wondering is - is it possible to integrate Angular JS Application inside Joomla? From what I was reading about Joomla, I understand …

Read More
How to call a JavaScript function from PHP?

How to call a JavaScript function from PHP? <?php jsfunction(); // or echo(jsfunction()); // or // Anything else? The following code is from xyz.html (on a button click) it calls a wait() in an external xyz.js. This wait() calls …

Read More
HTTP Content-Type Header and JSON

I have always been trying to avoid using most of the HTTP protocol's properties for the sake of fear of the unknown. However, I said to myself that I'm going to face fear today and start using headers purposefully. I …

Read More