Find the string is XML or JSON or String using angular 2

Question

I need to find my string is XML or JSON object or string, based on this response I will make the string looks pretty.

So for that, I need to identify what kind of object. Can anyone please help me to find a way to achieve this?

Thanks in advance.

validation , what is meaning , you want to find out which type of object or you want to find its xml, or json or string — Pranay Rana, May 17 '18 at 05:44
Yes Pranay Rana, I want to find out its xml, or json or string. — Lavanya Komarasamy, May 17 '18 at 05:46
you should try to parse string to xml if succeed then it's xml then try to parse in json if succeed then it's json else it's string. — Sanoj_V, May 17 '18 at 05:56
1. ["{"timestamp":"2018-05-15 17:25:02","message":"Requ…NotSupportedException","path":"/service//CANCEL"}"] 2. — Lavanya Komarasamy, May 17 '18 at 05:57
Just check if your string starts with `[` or `{` than it's json, or if it starts with `<` its xml. — Fussel, May 17 '18 at 05:58
@Fussel - either of those could be a string that is not valid XML/JSON ... e.g. `[ I am not JSON` or `< this is fun` — Jaromanda X, May 17 '18 at 05:58
Jaromanda X, in that case JSON also getting parsed to XML right? — Lavanya Komarasamy, May 17 '18 at 05:59
@LavanyaKomarasamy - absolutely ..... not - JSON is JSON, XML is XML - they are not even distant cousins, they could marry and have normal children — Jaromanda X, May 17 '18 at 06:00
@JaromandaX of cause, but if he knows his backend is sending correct stuff and just does not know if its in xml or json it would work. — Fussel, May 17 '18 at 06:00
but he states that the response can be `XML` `JSON` or `string` ... `[ this is not JSON` is a valid `string` - never assume to know what will happen in your code tomorrow — Jaromanda X, May 17 '18 at 06:01
try { let xmlDoc = $.parseXML(xml); //is valid XML return true; } catch (err) { // was not XML return false; } i used the above code, but its returning true for json also... — Lavanya Komarasamy, May 17 '18 at 06:02
that's because jQuery sux - but, with my test `$.parseXML(JSON.stringify({jquery:'sux'}))` it fails — Jaromanda X, May 17 '18 at 06:02

score 2 · Accepted Answer · edited May 17 '18 at 06:08

2

try like this

   function GetInputType(response) {
    try {
      //try to parse via json 
      a = JSON.parse(response);
      return 'json type';
    } catch(e) {
     //try xml parsing 
     let parser = new DOMParser;
     var xmlDoc = parser.parseFromString(response,"application/xml");
        if(xmlDoc.documentElement.nodeName == "parsererror")
           return 'string type';
        else 
           return 'xml type';
   }     
}

edited May 17 '18 at 06:08

Jaromanda X

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answered May 17 '18 at 06:03

Pranay Rana

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`parser.parseFromString` ... magic `parser` object is magic – Jaromanda X May 17 '18 at 06:04
@JaromandaX - not getting you but that is a way i found to parse string to xml – Pranay Rana May 17 '18 at 06:05
really ... so you have a magic `parser` variable in your browser? what is it? is it a `new DOMParser` you never had to create yourself? :p – Jaromanda X May 17 '18 at 06:05
I've added the missing piece for you - no need to thank me :D – Jaromanda X May 17 '18 at 06:08
Awesome! It's working perfect!! :D Thanks a lot friends :D – Lavanya Komarasamy May 17 '18 at 06:22
https://stackoverflow.com/questions/50382870/xml-syntax-highlighting-using-angular-2 anyone help me with this also? – Lavanya Komarasamy May 17 '18 at 06:25

Find the string is XML or JSON or String using angular 2

1 Answers1