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Function to explode not working... Need some help please.

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I'm using Kimono to extract some data and create an API:

    {
      "name": "site update",
      "count": 4,
      "frequency": "Manual Crawl",
      "version": 1,
      "newdata": true,
      "lastrunstatus": "success",
      "thisversionstatus": "success",
      "thisversionrun": "Sun Feb 07 2016 05:13:26 GMT+0000 (UTC)",
      "results": {
        "collection1": [
          {
            "title": {
              "href": "http://www.tvtrailers.com/scenes/view/id/9418/title-1/",
              "text": "Title 1"
            },
            "pubDate": "February 6, 2016",
            "index": 1,
            "url": "http://www.tvtrailers.com/home/"
          },
          {
            "title": {
              "href": "http://www.tvtrailers.com/scenes/view/id/9422/title-2/",
              "text": "Title 2"
            },
            "pubDate": "February 6, 2016",
            "index": 2,
            "url": "http://www.tvtrailers.com/home/"
          },
          {
            "title": {
              "href": "http://www.tvtrailers.com/scenes/view/id/9358/title-3/",
              "text": "Title 3"
            },
            "pubDate": "February 5, 2016",
            "index": 3,
            "url": "http://www.tvtrailers.com/home/"
          },
          {
            "title": {
              "href": "http://www.tvtrailers.com/scenes/view/id/9419/title-4/",
              "text": "Title 4"
            },
            "pubDate": "February 5, 2016",
            "index": 4,
            "url": "http://www.tvtrailers.com/home/"
          }
        ]
      }
    }

I'm trying to `GET` the value of `href` inside the `title` `element`, then 
`explode` the `string` to obtain the id number (`9418`, `9422`, `9358`, `9419` on the code above) and create a new property with just the id number. 

Or, if is not possible to create a new property, then I would like to just replace all the `href` string and keep the id number instead of the full `href` url.

Here is the updated `function` I'm using with the code provided by Trincot on the comments below:

   

     // main function
        function addPostNumbers(data) {
            for(var collection in data.results) {
                data.results[collection].forEach(function(row) {
                    if (parts = row.title.href.match(/\/(\d+)\//)) {
                        row.title.post_number = parts[1];
                    }
                });
            }
        }
    
    // call the main function
    addPostNumbers(data);
    
    // write result in document.
    document.write('<pre>' + JSON.stringify(data, null, 2) + '</pre>');


Result:

    {
      "error": "Bad Request",
      "message": "Your function failed to evaluate because of Error: Unexpected identifier"
    }

Kimono Inspector warnings
> line 5: Assignment in conditional expression.<br><br>
> line 8: Don't make functions within a loop.<br><br>
> line 16: document.write can be a form of eval<br><br>

Using only the `addPostNumbers(data)` without the `call` & `write` result

    {
      "error": "Bad Request",
      "message": "Your function failed to evaluate because of Error: parts is not defined"
    }

Also the code inspector inside kimono had 2 warnings:

> On line 7: Don't make functions within a loop.

> On line 8: Unnecessary semicolon

I appreciate any help and directions to figure out what's wrong with the code above, 
thank you.

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Thread

Function to explode not working... Need some help please. hazael00@gmail.com - 2016-02-07 00:32 -0800
  Re: Function to explode not working... Need some help please. Arne Vajhøj <arne@vajhoej.dk> - 2016-02-07 12:33 -0500
    Re: Function to explode not working... Need some help please. Eric Douglas <e.d.programmer@gmail.com> - 2016-02-08 05:20 -0800
      Re: Function to explode not working... Need some help please. Arne Vajhøj <arne@vajhoej.dk> - 2016-02-08 12:38 -0500

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