How to redirect url based on only one part of the path?

Question

Let me explain what I mean:

I want to redirect from https://example.net/category/83745/my-first-post to https://myredirect.net/my-first-post but without considering /category/numbers/

For the moment I work with this:

if(window.location.pathname == '/category/83745/my-first-post')
{
    window.location.href="https://myredirect.net/my-first-post";
}

And it is working fine but as I described I need to remove /category/numbers/ because they could be different and only consider this part /my-first-post for the redirection.

Thanks in advance.

Note that you can do this on the server using .htaccess rewrite rules (that way the browser's address bar will still show the long URL though) — user5734311
– user5734311, Commented Jul 19, 2019 at 8:39

Alex · Accepted Answer · 2019-07-19 08:27:54Z

1

if you want to just ignore the first 2 parts dynamically and only care about the last part of the URL then just do the following:

var stringContains = function (str, partial){
    return (str.indexOf(partial) > -1);
};

var url = '/category/83745/my-first-post';


if(stringContains(url, "/category")){
   var parts = a.split("/");
   window.location.href = parts[parts.length-1];
}

answered Jul 19, 2019 at 8:27

Alex

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Comments

hindmost · Accepted Answer · 2019-07-19 08:33:59Z

0

You can use String's methods lastIndexOf and slice:

var path = window.location.pathname;
window.location.href = "https://myredirect.net" + path.slice(path.lastIndexOf('/') + 1);

answered Jul 19, 2019 at 8:33

hindmost

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Comments

Vasyl Moskalov · Accepted Answer · 2019-07-19 08:25:54Z

0

Use Regex. Something like

if(window.location.pathname.match(/\/category\/\d+\/my\-first\-post$/)
{
    window.location.href="https://myredirect.net/my-first-post";
}

answered Jul 19, 2019 at 8:25

Vasyl Moskalov

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Comments

score 0 · Accepted Answer · 2019-07-25 04:22:56Z

0

You can run a regular expression match on the pathname

if(window.location.pathname.match(/my-first-post$/)) {
    window.location.href='/my-first-post';
}

More on regexes: https://www.regular-expressions.info/

Another good tool for building and testing regexes: https://regex101.com/

Edit:

To give an example of how to regex according to the more fleshed out specs from Chris G

let pathmatch = window.location.pathname.match(/([^\/]+)$/g);
window.location.href = '/' + pathmatch[0];

Thus, regex can be utilized to grab any pattern and use it later. IF there is a need to make sure the pathname contains category and/or numbers, it is easily added in to the pattern. This one simply disregards anything before the last forward slash (/)

edited Jul 25, 2019 at 4:22

answered Jul 19, 2019 at 8:25

user3123035

6 Comments

user5734311 Over a year ago

If you're going to literally state the pathname, why do a match() in the first place...?

user3123035 Over a year ago

@chris-g what do you mean "literally state", thats a real regex, matching only when the path ends with specified string. The op specificly said "but without considering /category/numbers/" so i purposefully left that part out. You could put .* in front but to what end?

user3123035 Over a year ago

Not only that, because it is a match(), you can put captures in that can later be used in the redirect. It is an extensible solution to a basic problem

user5734311 Over a year ago

Yeah, I know how regex works. What I mean is that not every blogpost is going to be called my-first-post obviously, so your solution is useless for any other path that needs to be rewritten, see OP's last sentence where he specifically mentions that a solution needs to remove the category and number no matter what the title slug at the end is. See hindmost's answer for the only correct one (out of four answers).

user5734311 Over a year ago

A regex based solution is of course possible but it would require a regex like /\/category\/\d+\/([A-Za-z-])$

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