Node Js get data from URL and pass to new variable - node.js

Question

I have created one NODE JS URL request to get JSON and pass it to the new variable var1.
Var1 can get data within request function when call var1 outside of request it returns null value why? how to get data from URL request and pass it to a new variable outside the Request URL?
function datadata() {
var var1 = 0;
var request = require('request');
request('http://x.x.x.x/json', function (error, response, body) {
if (!error && response.statusCode == 200) {
var importedJSON = JSON.parse(body);
var1 = importedJSON.result.data;
// show value of var1
console.log(var1);
}
});
// cannot show value of var1
console.log(var1);
return var1;
}

Answer 1

function datadata(){
var var1 = 0;
var request = require('request');
return new Promise(function(resolve, reject){
request('http://x.x.x.x/json', function (error, response, body) {
if (err) return reject(err);
try {
if (!error && response.statusCode == 200) {
var importedJSON = JSON.parse(body);
var1 = importedJSON.result.data;
console.log(var1);
} catch(e) {
reject(e);
}
});
});
}
datadata().then(function(res) {
console.log(res);
}).catch(function(err) {
console.err(err);
});

Answer 2

you can't get something outside the request that easy anyway you can try to use Promise
Example
const request = require('request');
var p = new Promise((resolve, reject) => {
request('http://x.x.x.x/json', function (error, response, body) {
if (!error && response.statusCode == 200) {
var importedJSON = JSON.parse(body);
resolve(importedJSON.result.data)
}
});
p.then((data) => {
console.log(data);
})

Answer 3

You can use a callback to the datadata like so
Check whether the body is found on the response, in that case change your code to
request('http://x.x.x.x/json', function (error,response) {
and
var importedJSON = JSON.parse(response.body);
You should do this because your importedJSON may not be having data because according to your code it's data comes from (body)
Mostly likely the json data will be found on the response.body.
Then we callback the specific data you want, in your case it's result.data. Again make sure the result.data can be found on the raw json data that the request gives you otherwise it won't output anything because there's nothing to output, most likely you will get errors
function datadata() {
var var1 = 0;
var request = require('request');
request('http://x.x.x.x/json', function (error,body,response) {
if (error && response.statusCode == 200) {
callback("There was an error")
}else{
var importedJSON = JSON.parse(body);
callback(importedJSON.result.data);
// show value of var1
console.log(var1);
});
}
datadata((error, var1) => {
if(error){
return console.log(error)
}
console.log(var1
})