How to create a SOAP Request BODY from JSON? - node.js

Question

I have created a node.js application to create a SOAP Request BODY from a JSON object. I have the following code
var convert = require('xml-js');
var xml = `<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:tem="http://tempuri.org/" xmlns:tel="http://schemas.datacontract.org"
xmlns:arr="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
<soapenv:Header/>
<soapenv:Body>
<tem:MyRequest>
<tem:request>
<tel:MyTag1>null</tel:MyTag1>
<tel:MyTag2>12</tel:MyTag2>
<tel:MyTag3>MyValue1</tel:MyTag3>
<tel:MyTag4><arr:int>1000</arr:int>
<arr:int>1001</arr:int><arr:int>1002</arr:int>
</tel:MyTag4>
</tem:request>
</tem:MyRequest>
</soapenv:Body>
</soapenv:Envelope>`;
var options = { ignoreComment: false, alwaysChildren: true };
var result1 = convert.xml2js(xml, options);
console.log("json = ",JSON.stringify(result1));
var options2 = {compact: true, ignoreComment: true, spaces: 4};
var result2 = convert.json2xml(result1, options2);
console.log("xml ==> ",result2);
I got output like this
json = {"elements":[{"type":"element","name":"soapenv:Envelope","attributes":{"xmlns:soapenv":"http://schemas.xmlsoap.org/soap/envelope/","xmlns:tem":"http://tempuri.org/","xmlns:tel":"http://schemas.datacontract.org","xmlns:arr":"http://schemas.microsoft.com/2003/10/Serialization/Arrays"},"elements":[{"type":"element","name":"soapenv:Header","elements":[]},{"type":"element","name":"soapenv:Body","elements":[{"type":"element","name":"tem:MyRequest","elements":[{"type":"element","name":"tem:request","elements":[{"type":"element","name":"tel:MyTag1","elements":[{"type":"text","text":"null"}]},{"type":"element","name":"tel:MyTag2","elements":[{"type":"text","text":"12"}]},{"type":"element","name":"tel:MyTag3","elements":[{"type":"text","text":"MyValue1"}]},{"type":"element","name":"tel:MyTag4","elements":[{"type":"element","name":"arr:int","elements":[{"type":"text","text":"1000"}]},{"type":"element","name":"arr:int","elements":[{"type":"text","text":"1001"}]},{"type":"element","name":"arr:int","elements":[{"type":"text","text":"1002"}]}]}]}]}]}]}]}
xml ==> <elements>
<type>element</type>
<name>soapenv:Envelope</name>
<attributes>
<xmlns:soapenv>http://schemas.xmlsoap.org/soap/envelope/</xmlns:soapenv>
<xmlns:tem>http://tempuri.org/</xmlns:tem>
<xmlns:tel>http://schemas.datacontract.org</xmlns:tel>
<xmlns:arr>http://schemas.microsoft.com/2003/10/Serialization/Arrays</xmlns:arr>
</attributes>
<elements>
<type>element</type>
<name>soapenv:Header</name>
</elements>
<elements>
<type>element</type>
<name>soapenv:Body</name>
<elements>
<type>element</type>
<name>tem:MyRequest</name>
<elements>
<type>element</type>
<name>tem:request</name>
<elements>
<type>element</type>
<name>tel:MyTag1</name>
<elements>
<type>text</type>
<text>null</text>
</elements>
</elements>
<elements>
<type>element</type>
<name>tel:MyTag2</name>
<elements>
<type>text</type>
<text>12</text>
</elements>
</elements>
<elements>
<type>element</type>
<name>tel:MyTag3</name>
<elements>
<type>text</type>
<text>MyValue1</text>
</elements>
</elements>
<elements>
<type>element</type>
<name>tel:MyTag4</name>
<elements>
<type>element</type>
<name>arr:int</name>
<elements>
<type>text</type>
<text>1000</text>
</elements>
</elements>
<elements>
<type>element</type>
<name>arr:int</name>
<elements>
<type>text</type>
<text>1001</text>
</elements>
</elements>
<elements>
<type>element</type>
<name>arr:int</name>
<elements>
<type>text</type>
<text>1002</text>
</elements>
</elements>
</elements>
</elements>
</elements>
</elements>
</elements>
There is a mismatch from input xml and final xml. why this?