Related
How would you convert from XML to JSON and then back to XML?
The following tools work quite well, but aren't completely consistent:
xml2json
Has anyone encountered this situation before?
I think this is the best one: Converting between XML and JSON
Be sure to read the accompanying article on the xml.com O'Reilly site, which goes into details of the problems with these conversions, which I think you will find enlightening. The fact that O'Reilly is hosting the article should indicate that Stefan's solution has merit.
https://github.com/abdmob/x2js - my own library (updated URL from http://code.google.com/p/x2js/):
This library provides XML to JSON (JavaScript Objects) and vice versa javascript conversion functions. The library is very small and doesn't require any other additional libraries.
API functions
new X2JS() - to create your instance to access all library functionality. Also you could specify optional configuration options here
X2JS.xml2json - Convert XML specified as DOM Object to JSON
X2JS.json2xml - Convert JSON to XML DOM Object
X2JS.xml_str2json - Convert XML specified as string to JSON
X2JS.json2xml_str - Convert JSON to XML string
Online Demo on http://jsfiddle.net/abdmob/gkxucxrj/1/
var x2js = new X2JS();
function convertXml2JSon() {
$("#jsonArea").val(JSON.stringify(x2js.xml_str2json($("#xmlArea").val())));
}
function convertJSon2XML() {
$("#xmlArea").val(x2js.json2xml_str($.parseJSON($("#jsonArea").val())));
}
convertXml2JSon();
convertJSon2XML();
$("#convertToJsonBtn").click(convertXml2JSon);
$("#convertToXmlBtn").click(convertJSon2XML);
These answers helped me a lot to make this function:
function xml2json(xml) {
try {
var obj = {};
if (xml.children.length > 0) {
for (var i = 0; i < xml.children.length; i++) {
var item = xml.children.item(i);
var nodeName = item.nodeName;
if (typeof (obj[nodeName]) == "undefined") {
obj[nodeName] = xml2json(item);
} else {
if (typeof (obj[nodeName].push) == "undefined") {
var old = obj[nodeName];
obj[nodeName] = [];
obj[nodeName].push(old);
}
obj[nodeName].push(xml2json(item));
}
}
} else {
obj = xml.textContent;
}
return obj;
} catch (e) {
console.log(e.message);
}
}
As long as you pass in a jquery dom/xml object: for me it was:
Jquery(this).find('content').eq(0)[0]
where content was the field I was storing my xml in.
I've created a recursive function based on regex, in case you don't want to install library and understand the logic behind what's happening:
const xmlSample = '<tag>tag content</tag><tag2>another content</tag2><tag3><insideTag>inside content</insideTag><emptyTag /></tag3>';
console.log(parseXmlToJson(xmlSample));
function parseXmlToJson(xml) {
const json = {};
for (const res of xml.matchAll(/(?:<(\w*)(?:\s[^>]*)*>)((?:(?!<\1).)*)(?:<\/\1>)|<(\w*)(?:\s*)*\/>/gm)) {
const key = res[1] || res[3];
const value = res[2] && parseXmlToJson(res[2]);
json[key] = ((value && Object.keys(value).length) ? value : res[2]) || null;
}
return json;
}
Regex explanation for each loop:
res[0] - return the xml (as is)
res[1] - return the xml tag name
res[2] - return the xml content
res[3] - return the xml tag name in case the tag closes itself. In example: <tag />
You can check how the regex works here:
https://regex101.com/r/ZJpCAL/1
Note: In case json has a key with an undefined value, it is being removed.
That's why I've inserted null at the end of line 9.
I was using xmlToJson just to get a single value of the xml.
I found doing the following is much easier (if the xml only occurs once..)
let xml =
'<person>' +
' <id>762384324</id>' +
' <firstname>Hank</firstname> ' +
' <lastname>Stone</lastname>' +
'</person>';
let getXmlValue = function(str, key) {
return str.substring(
str.lastIndexOf('<' + key + '>') + ('<' + key + '>').length,
str.lastIndexOf('</' + key + '>')
);
}
alert(getXmlValue(xml, 'firstname')); // gives back Hank
You can also use txml. It can parse into a DOM made of simple objects and stringify. In the result, the content will be trimmed. So formating of the original with whitespaces will be lost. But this could be used very good to minify HTML.
const xml = require('txml');
const data = `
<tag>tag content</tag>
<tag2>another content</tag2>
<tag3>
<insideTag>inside content</insideTag>
<emptyTag />
</tag3>`;
const dom = xml(data); // the dom can be JSON.stringified
xml.stringify(dom); // this will return the dom into an xml-string
Disclaimer: I am the author of txml, the fastest xml parser in javascript.
A while back I wrote this tool https://bitbucket.org/surenrao/xml2json for my TV Watchlist app, hope this helps too.
Synopsys: A library to not only convert xml to json, but is also easy to debug (without circular errors) and recreate json back to xml. Features :- Parse xml to json object. Print json object back to xml. Can be used to save xml in IndexedDB as X2J objects. Print json object.
Disclaimer: I've written fast-xml-parser
Fast XML Parser can help to convert XML to JSON and vice versa. Here is the example;
var options = {
attributeNamePrefix : "#_",
attrNodeName: "attr", //default is 'false'
textNodeName : "#text",
ignoreAttributes : true,
ignoreNameSpace : false,
allowBooleanAttributes : false,
parseNodeValue : true,
parseAttributeValue : false,
trimValues: true,
decodeHTMLchar: false,
cdataTagName: "__cdata", //default is 'false'
cdataPositionChar: "\\c",
};
if(parser.validate(xmlData)=== true){//optional
var jsonObj = parser.parse(xmlData,options);
}
If you want to parse JSON or JS object into XML then
//default options need not to set
var defaultOptions = {
attributeNamePrefix : "#_",
attrNodeName: "#", //default is false
textNodeName : "#text",
ignoreAttributes : true,
encodeHTMLchar: false,
cdataTagName: "__cdata", //default is false
cdataPositionChar: "\\c",
format: false,
indentBy: " ",
supressEmptyNode: false
};
var parser = new parser.j2xParser(defaultOptions);
var xml = parser.parse(json_or_js_obj);
Here' a good tool from a documented and very famous npm library that does the xml <-> js conversions very well: differently from some (maybe all) of the above proposed solutions, it converts xml comments also.
var obj = {name: "Super", Surname: "Man", age: 23};
var builder = new xml2js.Builder();
var xml = builder.buildObject(obj);
In 6 simple ES6 lines:
xml2json = xml => {
var el = xml.nodeType === 9 ? xml.documentElement : xml
var h = {name: el.nodeName}
h.content = Array.from(el.childNodes || []).filter(e => e.nodeType === 3).map(e => e.textContent).join('').trim()
h.attributes = Array.from(el.attributes || []).filter(a => a).reduce((h, a) => { h[a.name] = a.value; return h }, {})
h.children = Array.from(el.childNodes || []).filter(e => e.nodeType === 1).map(c => h[c.nodeName] = xml2json(c))
return h
}
Test with echo "xml2json_example()" | node -r xml2json.es6 with source at https://github.com/brauliobo/biochemical-db/blob/master/lib/xml2json.es6
I would personally recommend this tool. It is an XML to JSON converter.
It is very lightweight and is in pure JavaScript. It needs no dependencies. You can simply add the functions to your code and use it as you wish.
It also takes the XML attributes into considerations.
var xml = ‘<person id=”1234” age=”30”><name>John Doe</name></person>’;
var json = xml2json(xml);
console.log(json);
// prints ‘{“person”: {“id”: “1234”, “age”: “30”, “name”: “John Doe”}}’
Here's an online demo!
There is an open sourced library Xml-to-json with methods jsonToXml(json) and xmlToJson(xml).
Here's an online demo!
This function directly reads the DOM properties of the XMLDocument (or document node/element) to build the JSON completely and accurately without trying to guess or match. Pass it responseXML, not responseText from XMLHttpRequest.
xml2json(xmlDoc)
If you only have a string of XML and not an XMLDocument, jQuery will convert your text to one.
xml2json($(xmlString)[0])
Each node becomes an object. (All elements are nodes, not all nodes are elements (e.g. text within an element).)
Every object contains the node name and type.
If it has attributes, they appear as properties in an attributes object.
If it has children, they appear recursively as node->objects in a children array.
If it's a Text, CDATA, or Comment node (bare text between element tags) or a comment, it shouldn't have attributes or children but the text will be in a text property.
{
// Always present
"name": "FancyElement",
"type": "Element",
// If present
"attributes: {
"attr1": "val1",
"attr2": "val2"
},
"children": [...],
"text": "buncha fancy words"
}
Caveat: I'm not familiar with all the node types. It's probably not grabbing needed/useful info from all of them. It was tested on and behaves as expected for
Element
Text
CDATA
Comment
Document
function xml2json(xml) {
try {
const types = [null,
"Element",
"Attribute",
"Text",
"CDATA",
"EntityReference", // Deprecated
"Entity", // Deprecated
"ProcessingInstruction",
"Comment",
"Document",
"DocumentType",
"DocumentFragment",
"Notation" // Deprecated
];
var o = {};
o.name = xml.nodeName;
o.type = types[xml.nodeType];
if (xml.nodeType == 3 ||
xml.nodeType == 4 ||
xml.nodeType == 8 ) {
o.text = xml.textContent;
} else {
if (xml.attributes) {
o.attributes = {};
for (const a of xml.attributes) {
o.attributes[a.name] = a.value;
}
}
if (xml.childNodes.length) {
o.children = [];
for (const x of xml.childNodes) {
o.children.push(xml2json(x))
}
}
}
return (o);
} catch (e) {
alert('Error in xml2json. See console for details.');
console.log('Error in xml2json processing node:');
console.log(o);
console.log('Error:');
console.log(e);
}
}
var doc = document.getElementById("doc");
var out = document.getElementById("out");
out.innerText = JSON.stringify(xml2json(doc), null, 2);
/* Let's process the whole Code Snippet #document, why not?
* Yes, the JSON we just put in the document body and all
* this code is encoded in the JSON in the console.
* In that copy you can see why the XML DOM will all be one line.
* The JSON in the console has "\n" nodes all throughout.
*/
console.log(xml2json(document));
#doc,
#out {
border: 1px solid black;
}
<div id="doc"><!-- The XML DOM will all be on one line --><div personality="bubbly" relevance=42>This text is valid for HTML.<span>But it probably shouldn't be siblings to an element in XML.</span></div></div>
<pre id="out"></pre>
The best way to do it using server side as client side doesn't work well in all scenarios. I was trying to build online json to xml and xml to json converter using javascript and I felt almost impossible as it was not working in all scenarios. Ultimately I ended up doing it server side using Newtonsoft in ASP.MVC. Here is the online converter http://techfunda.com/Tools/XmlToJson
I try get the sessionid before REST function, but in the case if I does not convert toString(); show only numbers (21 22 2e ...).
See this image:
1º:
Obs.: Before using split.
!!xxxxxxx.xxxxx.xxxxxxx.rest.schema.xxxxResp {error: null, sessionID: qdaxxxxxxxxxxxxxj}
My code:
var Client = require('./lib/node-rest-client').Client;
var client = new Client();
var dataLogin = {
data: { "userName":"xxxxxxxx","password":"xxxxxxxx","platform":"xxxxx" },
headers: { "Content-Type": "application/json" }
};
client.registerMethod("postMethod", "xxxxxxxxxxx/login", "POST");
client.methods.postMethod(dataLogin, function (data, response) {
// parsed response body as js object
// console.log(data); all return, image 1
// raw response
if(Buffer.isBuffer(data)){
data = data.toString('utf8'); // if i does not convert to string, return numbers, see image 1..
console.log(data); //all inside image 2, and i want just value from sessionid
var output = data;
var res = output.split(" "); // using split
res = res[4].split("}", 1);
}
console.log(res); //image 3
});
I tested with JSON.parse and JSON.stringify and it did not work, show just 'undefined' for all. After convert toString();, And since I've turned the values into string, I thought of using split to get only the value of sessionid.
And when I used split, all transform to array and the return is from console.log(data), see image 2:
2º:
Obs.: After use split and convert to array automatically.
And the return after use split is with the conditions inside my code:
3º:
And the return after use split is with the conditions inside my code:
[ 'bkkRQxxxxxxxxxxxxx' ]
And I want just:
bkkRQxxxxxxxxxxxxx
I would like to know how to solve this after all these temptations, but if you have another way of getting the sessionid, I'd be happy to know.
Thanks advance!
After converting the Buffer to a string, remove anything attached to the front with using data.substr(data.indexOf('{')), then JSON.parse() the rest. Then you can just use the object to get the sessionID.
if(Buffer.isBuffer(data)){
data = data.toString('utf8');
data = data.substr(data.indexOf('{'));
obj = JSON.parse(data);
console.log(obj.sessionID);
}
EDIT:
The issue you are having with JSON.parse() is because what is being returned is not actually JSON. The JSON spec requires the properties to be quoted ("). See this article
If the string looked like this, it would work: {"error": null, "sessionID": qdaxxxxxxxxxxxxxj}
Because the json is not really json, you can use a regular expression to get the info you want. This should get it for you.
re = /(sessionID: )([^,}]*)/g;
match = re.exec(data);
console.log(match[2]);
EDIT 2: After fully reading the article that I linked above (oops haha), this is a more preferable way to deal with unquoted JSON.
var crappyJSON = '{ somePropertyWithoutQuotes: "theValue!" }';
var fixedJSON = crappyJSON.replace(/(['"])?([a-zA-Z0-9_]+)(['"])?:/g, '"$2": ');
var aNiceObject = JSON.parse(fixedJSON);
Website that I'm making is in two different languages each data is saved in mongodb with prefix _nl or _en
With a url I need to be able to set up language like that:
http://localhost/en/This-Is-English-Head/This-Is-English-Sub
My code look like that:
var headPage = req.params.headPage;
var subPage = req.params.subPage;
var slug = 'name';
var slugSub = 'subPages.slug_en';
var myObject = {};
myObject[slugSub] = subPage;
myObject[slug] = headPage;
console.log(myObject);
Site.find(myObject,
function (err, pages) {
var Pages = {};
pages.forEach(function (page) {
Pages[page._id] = page;
});
console.log(Pages);
});
After console.log it I get following:
{ 'subPages.slug_en': 'This-Is-English-Sub',
name: 'This-Is-English-Head' }
Is you can see objectname subPages.slug_en is seen as a String insteed of object name..
I know that javascript does not support underscores(I guess?) but I'm still looking for a fix, otherwise i'll be forced to change all underscores in my db to different character...
Edit:
The final result of console.log need to be:
{ subPages.slug_en: 'This-Is-English-Sub',
name: 'This-Is-English-Head' }
Insteed of :
{ 'subPages.slug_en': 'This-Is-English-Sub',
name: 'This-Is-English-Head' }
Otherwise it does not work
The reason you are seeing 'subPages.slug_en' (with string quotes) is because of the . in the object key, not the underscore.
Underscores are definitely supported in object keys without quoting.
Using subPages.slug_en (without string quotes) would require you to have an object as follows:
{ subPages: {slug_en: 'This-Is-English-Sub'},
name: 'This-Is-English-Head' }
Which you could set with the following:
myObject['subPages']['slug_en'] = subPage;
Or simply:
myObject.subPages.slug_en = subPage;
I'm having a bit of trouble wrapping my head around some JSON stuff. Namely, I'm trying to retrieve a string from a json response received from the google translate api i'm querying.
var translator = function () {
for (var i = 0; i < result.length; i++)
{
//Construct URI
var source =
'https://www.googleapis.com/language/translate/v2?' +
'key=MY-API-KEY-REMOVED-ON-PURPOSE&' +
'source=en&' +
'target=fr&' +
'q=' +
result[i][1]; //looping over an array, no problem there
//Receive response from server
var to_Translate =new XMLHttpRequest();
to_Translate.open("GET",source,false);
to_Translate.send();
var translated = to_Translate.responseText;
JSON.parse(translated);
translated = translated.data.translations[0].translatedText;
console.log(translated);
}
};
translator();
Where
console.log(translated);
yields
{
"data": {
"translations": [
{
"translatedText": "some stuff that's been translated"
}
]
}
}
My question is: how can i access the value of translatedText? I've tried:
translated.data.translations[0].translatedText;
But it doesn't seem to work. When I console.log this i get
Uncaught TypeError: Cannot read property 'translations' of undefined
translator
(anonymous function)
Let me know what you guys think!
That is just text you have to parse it with
JSON.parse(translated)
so you could access it with, for example, translated.data
UPDATE
The error you are getting means that translated.data is undefined, you have to assign the parse to a variable, otherwise it will never work, it doesn't modify it in place
var translated = JSON.parse(to_Translate.responseText);
Yes, Use
translated.data.translations[0].translatedText;
Hope it will work fine.
So close!
translated.data.translations[0].translatedText;
translations is an array of objects, and you want the translatedText property of the first element in the array.
UPDATE:
Just to confirm the output of to_Translate.responseText is a string containing:
{
"data": {
"translations": [
{
"translatedText": "some stuff that's been translated"
}
]
}
}
So you should be able to do:
var translated = to_Translate.responseText,
parsed = JSON.parse(translated),
text = parsed.data.translations[0].translatedText;
console.log(text);
How would you convert from XML to JSON and then back to XML?
The following tools work quite well, but aren't completely consistent:
xml2json
Has anyone encountered this situation before?
I think this is the best one: Converting between XML and JSON
Be sure to read the accompanying article on the xml.com O'Reilly site, which goes into details of the problems with these conversions, which I think you will find enlightening. The fact that O'Reilly is hosting the article should indicate that Stefan's solution has merit.
https://github.com/abdmob/x2js - my own library (updated URL from http://code.google.com/p/x2js/):
This library provides XML to JSON (JavaScript Objects) and vice versa javascript conversion functions. The library is very small and doesn't require any other additional libraries.
API functions
new X2JS() - to create your instance to access all library functionality. Also you could specify optional configuration options here
X2JS.xml2json - Convert XML specified as DOM Object to JSON
X2JS.json2xml - Convert JSON to XML DOM Object
X2JS.xml_str2json - Convert XML specified as string to JSON
X2JS.json2xml_str - Convert JSON to XML string
Online Demo on http://jsfiddle.net/abdmob/gkxucxrj/1/
var x2js = new X2JS();
function convertXml2JSon() {
$("#jsonArea").val(JSON.stringify(x2js.xml_str2json($("#xmlArea").val())));
}
function convertJSon2XML() {
$("#xmlArea").val(x2js.json2xml_str($.parseJSON($("#jsonArea").val())));
}
convertXml2JSon();
convertJSon2XML();
$("#convertToJsonBtn").click(convertXml2JSon);
$("#convertToXmlBtn").click(convertJSon2XML);
These answers helped me a lot to make this function:
function xml2json(xml) {
try {
var obj = {};
if (xml.children.length > 0) {
for (var i = 0; i < xml.children.length; i++) {
var item = xml.children.item(i);
var nodeName = item.nodeName;
if (typeof (obj[nodeName]) == "undefined") {
obj[nodeName] = xml2json(item);
} else {
if (typeof (obj[nodeName].push) == "undefined") {
var old = obj[nodeName];
obj[nodeName] = [];
obj[nodeName].push(old);
}
obj[nodeName].push(xml2json(item));
}
}
} else {
obj = xml.textContent;
}
return obj;
} catch (e) {
console.log(e.message);
}
}
As long as you pass in a jquery dom/xml object: for me it was:
Jquery(this).find('content').eq(0)[0]
where content was the field I was storing my xml in.
I've created a recursive function based on regex, in case you don't want to install library and understand the logic behind what's happening:
const xmlSample = '<tag>tag content</tag><tag2>another content</tag2><tag3><insideTag>inside content</insideTag><emptyTag /></tag3>';
console.log(parseXmlToJson(xmlSample));
function parseXmlToJson(xml) {
const json = {};
for (const res of xml.matchAll(/(?:<(\w*)(?:\s[^>]*)*>)((?:(?!<\1).)*)(?:<\/\1>)|<(\w*)(?:\s*)*\/>/gm)) {
const key = res[1] || res[3];
const value = res[2] && parseXmlToJson(res[2]);
json[key] = ((value && Object.keys(value).length) ? value : res[2]) || null;
}
return json;
}
Regex explanation for each loop:
res[0] - return the xml (as is)
res[1] - return the xml tag name
res[2] - return the xml content
res[3] - return the xml tag name in case the tag closes itself. In example: <tag />
You can check how the regex works here:
https://regex101.com/r/ZJpCAL/1
Note: In case json has a key with an undefined value, it is being removed.
That's why I've inserted null at the end of line 9.
I was using xmlToJson just to get a single value of the xml.
I found doing the following is much easier (if the xml only occurs once..)
let xml =
'<person>' +
' <id>762384324</id>' +
' <firstname>Hank</firstname> ' +
' <lastname>Stone</lastname>' +
'</person>';
let getXmlValue = function(str, key) {
return str.substring(
str.lastIndexOf('<' + key + '>') + ('<' + key + '>').length,
str.lastIndexOf('</' + key + '>')
);
}
alert(getXmlValue(xml, 'firstname')); // gives back Hank
You can also use txml. It can parse into a DOM made of simple objects and stringify. In the result, the content will be trimmed. So formating of the original with whitespaces will be lost. But this could be used very good to minify HTML.
const xml = require('txml');
const data = `
<tag>tag content</tag>
<tag2>another content</tag2>
<tag3>
<insideTag>inside content</insideTag>
<emptyTag />
</tag3>`;
const dom = xml(data); // the dom can be JSON.stringified
xml.stringify(dom); // this will return the dom into an xml-string
Disclaimer: I am the author of txml, the fastest xml parser in javascript.
A while back I wrote this tool https://bitbucket.org/surenrao/xml2json for my TV Watchlist app, hope this helps too.
Synopsys: A library to not only convert xml to json, but is also easy to debug (without circular errors) and recreate json back to xml. Features :- Parse xml to json object. Print json object back to xml. Can be used to save xml in IndexedDB as X2J objects. Print json object.
In 6 simple ES6 lines:
xml2json = xml => {
var el = xml.nodeType === 9 ? xml.documentElement : xml
var h = {name: el.nodeName}
h.content = Array.from(el.childNodes || []).filter(e => e.nodeType === 3).map(e => e.textContent).join('').trim()
h.attributes = Array.from(el.attributes || []).filter(a => a).reduce((h, a) => { h[a.name] = a.value; return h }, {})
h.children = Array.from(el.childNodes || []).filter(e => e.nodeType === 1).map(c => h[c.nodeName] = xml2json(c))
return h
}
Test with echo "xml2json_example()" | node -r xml2json.es6 with source at https://github.com/brauliobo/biochemical-db/blob/master/lib/xml2json.es6
Disclaimer: I've written fast-xml-parser
Fast XML Parser can help to convert XML to JSON and vice versa. Here is the example;
var options = {
attributeNamePrefix : "#_",
attrNodeName: "attr", //default is 'false'
textNodeName : "#text",
ignoreAttributes : true,
ignoreNameSpace : false,
allowBooleanAttributes : false,
parseNodeValue : true,
parseAttributeValue : false,
trimValues: true,
decodeHTMLchar: false,
cdataTagName: "__cdata", //default is 'false'
cdataPositionChar: "\\c",
};
if(parser.validate(xmlData)=== true){//optional
var jsonObj = parser.parse(xmlData,options);
}
If you want to parse JSON or JS object into XML then
//default options need not to set
var defaultOptions = {
attributeNamePrefix : "#_",
attrNodeName: "#", //default is false
textNodeName : "#text",
ignoreAttributes : true,
encodeHTMLchar: false,
cdataTagName: "__cdata", //default is false
cdataPositionChar: "\\c",
format: false,
indentBy: " ",
supressEmptyNode: false
};
var parser = new parser.j2xParser(defaultOptions);
var xml = parser.parse(json_or_js_obj);
Here' a good tool from a documented and very famous npm library that does the xml <-> js conversions very well: differently from some (maybe all) of the above proposed solutions, it converts xml comments also.
var obj = {name: "Super", Surname: "Man", age: 23};
var builder = new xml2js.Builder();
var xml = builder.buildObject(obj);
I would personally recommend this tool. It is an XML to JSON converter.
It is very lightweight and is in pure JavaScript. It needs no dependencies. You can simply add the functions to your code and use it as you wish.
It also takes the XML attributes into considerations.
var xml = ‘<person id=”1234” age=”30”><name>John Doe</name></person>’;
var json = xml2json(xml);
console.log(json);
// prints ‘{“person”: {“id”: “1234”, “age”: “30”, “name”: “John Doe”}}’
Here's an online demo!
There is an open sourced library Xml-to-json with methods jsonToXml(json) and xmlToJson(xml).
Here's an online demo!
This function directly reads the DOM properties of the XMLDocument (or document node/element) to build the JSON completely and accurately without trying to guess or match. Pass it responseXML, not responseText from XMLHttpRequest.
xml2json(xmlDoc)
If you only have a string of XML and not an XMLDocument, jQuery will convert your text to one.
xml2json($(xmlString)[0])
Each node becomes an object. (All elements are nodes, not all nodes are elements (e.g. text within an element).)
Every object contains the node name and type.
If it has attributes, they appear as properties in an attributes object.
If it has children, they appear recursively as node->objects in a children array.
If it's a Text, CDATA, or Comment node (bare text between element tags) or a comment, it shouldn't have attributes or children but the text will be in a text property.
{
// Always present
"name": "FancyElement",
"type": "Element",
// If present
"attributes: {
"attr1": "val1",
"attr2": "val2"
},
"children": [...],
"text": "buncha fancy words"
}
Caveat: I'm not familiar with all the node types. It's probably not grabbing needed/useful info from all of them. It was tested on and behaves as expected for
Element
Text
CDATA
Comment
Document
function xml2json(xml) {
try {
const types = [null,
"Element",
"Attribute",
"Text",
"CDATA",
"EntityReference", // Deprecated
"Entity", // Deprecated
"ProcessingInstruction",
"Comment",
"Document",
"DocumentType",
"DocumentFragment",
"Notation" // Deprecated
];
var o = {};
o.name = xml.nodeName;
o.type = types[xml.nodeType];
if (xml.nodeType == 3 ||
xml.nodeType == 4 ||
xml.nodeType == 8 ) {
o.text = xml.textContent;
} else {
if (xml.attributes) {
o.attributes = {};
for (const a of xml.attributes) {
o.attributes[a.name] = a.value;
}
}
if (xml.childNodes.length) {
o.children = [];
for (const x of xml.childNodes) {
o.children.push(xml2json(x))
}
}
}
return (o);
} catch (e) {
alert('Error in xml2json. See console for details.');
console.log('Error in xml2json processing node:');
console.log(o);
console.log('Error:');
console.log(e);
}
}
var doc = document.getElementById("doc");
var out = document.getElementById("out");
out.innerText = JSON.stringify(xml2json(doc), null, 2);
/* Let's process the whole Code Snippet #document, why not?
* Yes, the JSON we just put in the document body and all
* this code is encoded in the JSON in the console.
* In that copy you can see why the XML DOM will all be one line.
* The JSON in the console has "\n" nodes all throughout.
*/
console.log(xml2json(document));
#doc,
#out {
border: 1px solid black;
}
<div id="doc"><!-- The XML DOM will all be on one line --><div personality="bubbly" relevance=42>This text is valid for HTML.<span>But it probably shouldn't be siblings to an element in XML.</span></div></div>
<pre id="out"></pre>
The best way to do it using server side as client side doesn't work well in all scenarios. I was trying to build online json to xml and xml to json converter using javascript and I felt almost impossible as it was not working in all scenarios. Ultimately I ended up doing it server side using Newtonsoft in ASP.MVC. Here is the online converter http://techfunda.com/Tools/XmlToJson