node.js - adding new element to the xml using node js - 


var readline = require('readline'); var et = require('elementtree'); var xml = et.xml; var elementtree = et.elementtree; var element = et.element; var subelement = et.subelement; var fs = require('fs'); var root; var datanew, etreenew; var etree;  var rl = readline.createinterface ({     input: process.stdin,     output: process.stdout });  function createxml(root) {        etree = new elementtree(root);     var done = json.stringify(etree);     console.log(done);     rl.question('\nenter file name create xml: \n', function (d){     var xml = root.write({'xml_declaration': false});     console.log(xml);     var newfile = fs.write(d,xml);     console.log("\nxml file updated..!!\n");     }); }    function getelements(subroot, numelements) {     if(numelements > 0)     {         rl.question('\nenter element name: \n', function(name1)                 {             rl.question('\nenter element data: \n', function (data)                     {                 var subroot2 = subelement(subroot, name1);                 subroot2.text = data;                 numelements = numelements - 1;                 getelements(subroot, numelements);                     });                 });     }else         {         createxml(root);         } }  function start()  {     rl.question('\nenter file name update xml: \n', function (f){         datanew = fs.readfilesync(f).tostring();         root = et.parse(datanew);         rl.question('\nenter sub root element name: \n', function (subrootname)                 {             var find1 = root.find(subrootname);             var subroot = subelement(find1);             rl.question('\nenter number of elements: \n',  function(numelements)                     {                 getelements(subroot, numelements);                     });                 });     }); }   start();

above script using modify xml file using node js getting error while writing updated xml file. 'error: invalid tag type serialization: undefined'. done wrong here?


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