Js Onclick="history.go(-1) Only If Under My Domain

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 t

Solution 1:

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:

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

Solution 2:

Adding branching logic into an inline click handler gets messy. If you can move this to a function and reference it it will be far more readable.

if(document.referrer.indexOf('mysite.com') >= 0) {
    history.go(-1);
}
else {
    window.location.href = 'myHomePageUrl'; // this might just be '/' of your site
}

Edit: If you are not concerned about adding names to the pages global scope you can create a function in a script tag immediately before the link you are creating:

<script>functionbackClick() {
        // above conditional goes here.returnfalse;
    }
</script><br/><ahref=""onclick="backClick()"><?phpecho JText::_('VOLTAR'); ?></a>

Solution 3:

I have tried some of the codes above and I needed to make some changes to make it work for me.

1. remove href=""
2. "window.location.href" must have http://

functionbackClick() {
			if (document.referrer.indexOf(window.location.host) !== -1) {
				history.go(-1); returnfalse;
			}
			else { window.location.href = 'https://stackoverflow.com'; }
    }

<aonclick="backClick()">go back</a>