javascript (node.js) convert url hash to url with parameters

Question

I have a large static result and I'm trying the following changes:

Replace the original domain to another one.
Convert url's hash to url with parameters using the post id only for a specific domain (website.com).

This is my original static result example with 3 links and 2 differents domain names:

var json = {This is the static result with many links like this <a href=\"http://website.com/932427/post/something-else/\" target=\"_blank\"> and this is other link obviusly with another post id <a href=\"http://website.com/456543/post/another-something-else/\" target=\"_blank\">, this is another reference from another domain <a href=\"http://onother-website.com/23423/post/please-ingnore-this-domain/\" target=\"_blank\"> }

So, the originals url's I need to change are two, according with the above example:

http://website.com/932427/post/something-else/ 
http://website.com/456542/post/another-something-else/

And I want to change that links now with this format:

http://other_domain.com/id?=932427/
http://other_domain.com/id?=456543/

And the final result should look like this into the static result.

By the way I'm using node.js

Thanks in advance

Do you mean a redirect? Do you use any framework for the HTTP? — Bergi
– Bergi, Commented Mar 1, 2014 at 16:36
json does not look like real JSON. Take a look at regular expressions (developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/…). You'll then be able to find required links and replace/reformat them in a certain way you need it. — Michael Radionov
– Michael Radionov, Commented Mar 1, 2014 at 17:13
@FUserThrowError Sure, I'll trying with this option: var url = "website.com/932427/post/something-else"; var re3 = /\/news.urban360.com.mx\/(\d+)/; var found = url.match(re3); console.log(JSON.stringify(found)); However just change the first coincidence. var found = url.match(re3); — user3368141
– user3368141, Commented Mar 1, 2014 at 17:19
@Bergi Nop, i dont looking for redirect, i looking for change the original urls into the result static, on the another hand I use express. — user3368141
– user3368141, Commented Mar 1, 2014 at 17:25

qubyte · Accepted Answer · 2014-03-01 20:08:57Z

4

Node.js has a built in module for parsing and constructing URLs. Your solution can be written as:

var url = require('url'); // Comes with Node.

// Get the path: '/932427/post/something-else/'
var path = url.parse('http://website.com/932427/post/something-else/').path; 

var newUrl = url.format({
    protocol: 'http',
    host: 'other_domain.com',
    query: { id: path.split('/')[1] }
});

edited Mar 1, 2014 at 20:08

answered Mar 1, 2014 at 17:46

qubyte

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flitig · Accepted Answer · 2014-03-01 17:33:59Z

0

Assuming all links follow the same pattern and your json object looks like this

var json = {
    urls: [
        'http://website.com/932427/post/something-else/',
        'http://website.com/456542/post/another-something-else/'     
    ]
};

You could use a simple regex to extract the ids and construct your new links like this

var idPattern = /\/(\d{6})\//; // matches 6 digits inside slashes
var newUrlFormat = 'http://other_domain.com/id?={id}/';
var newUrls = [];

json.urls.forEach(function (url) {
    var id = idPattern.exec(url)[1];
    newUrls.push(newUrlFormat.replace('{id}', id))
});

See this jsfiddle to try it out.

edited Mar 1, 2014 at 17:33

answered Mar 1, 2014 at 17:23

flitig

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3 Comments

user3368141 Over a year ago

Thaks, I will try it!.

djechlin Over a year ago

this will work but is certainly not a robust solution. Much better to use Node.js built-ins, see other answer.

flitig Over a year ago

I don't think my solution is less robust, but I agree that using built in NodeJS modules is a better way to go. It also makes for more readable code. I upvoted the other answer.

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