Use Javascript to list a specific directory in file path

Question

I'm using javascript to determine which directory an article is in, and self-generate all the file paths in the page. I've got it working, except that I still need to manually input the year the page was created as a variable when the article is moved from a 'recent' directory into the archive. I'm hoping to fully automate the process by using javascript to return the value of a specific directory in the file path.

For example, if the file path is: news/foo/2015/bar/article.html I need to extract the text '2015' and place it in a variable named 'year'.

Note the directory names won't be consistent, so I don't think searching the string for 'foo' or 'bar' is an option, rather the script needs to return the text between the second-last and third-last forward slash, or just the last 4 characters before the second-last forward slash. Thanks.

Nemer · Accepted Answer · 2019-03-12 23:29:02Z

1

let p = "news/foo/2015/bar/article.htm";

let splitedPath = p.split('/');

// to get the right position of the year, may be the year position is dynamic;
let year = splitedPath.filter(ele => parseInt(ele)>0 && ele.length ==4);
console.log(year[0]);

answered Mar 12, 2019 at 23:29

Nemer

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Dr_Hoon Over a year ago

Thanks for this, worked perfectly. I just had to add 'if (year == "")' to my existing code to cover the instances where the article is recent and yet to be filed under a specific year. Much appreciated answer.

tadman · Accepted Answer · 2019-03-12 22:49:35Z

1

Doesn't seem so bad, you can just use split:

let p = "news/foo/2015/bar/article.htm";

let year = p.split('/')[2];

You can also use parseInt if you want that as a proper number, if that matters.

answered Mar 12, 2019 at 22:49

tadman

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ProEvilz Over a year ago

Just throwing it out there, regex is another alternative if you really couldn't use split for some reason... but split definitely seems the better way to go.

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