Selecting a non-tag element in jQuery

I have the multiple tags as mentioned below in my HTML. Note the square brackets like BBcode.

[oembed]http://rich-media.url[/oembed]

I need to get the value of URL using jQuery. Any help would be appreciated.

Please have a look at updated fiddle:

https://jsfiddle.net/hxa4m8Ld/1/

var content = $('#mytags').text();
var currIndex = 0;
while(currIndex < content.length){
    var stIndex = content.indexOf("[oembed]",currIndex);
  var edIndex = content.indexOf("[/oembed]",stIndex);
  if(stIndex > -1 && edIndex> -1){
    var url = content.substring(stIndex+8,edIndex);
    currIndex = edIndex+9;
    console.log(url);
  }
  else
  {
    currIndex = content.length;
  }
}

I used simple javascript string functions to fetch the required urls. Hope that will help you.