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how do I return data from a node.js request call? (undefined is not a function)


how do I return data from a node.js request call? (undefined is not a function)

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how do I return data from a node.js request call? (undefined is not a function)
Tag : node.js , By : Shawazi
Date : November 24 2020, 03:41 PM


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I receive correct data from JSON request but when I want to return the result from the function I get "undefined&qu


Tag : php , By : user140973
Date : March 29 2020, 07:55 AM
Any of those help The problem is that getJSON is asynchronous.
console.log(operations) is executing before the JSON request has actually been completed. You can see this in the console.log where the undefined line will appear above the options.
$.getJSON(window.location.pathname+'/ajaxRequest?ordernumber='+Ordernumber+'&'+Math.round(new Date().getTime()), function(data) {
    if(data['articleID']) {
        options = data['values_label_array'];   
        console.log(options)    // returns {"1":"Option 1","2":"Option 2"}
        processJSON(options );
     }       
});

function selectOptions(){
    getOptionsJSON($(row).find('.ordernumber').val());
}

function processJSON(data) {
   //do something with the JSON;
}

When i call the ajax in node.js as a return undefined


Tag : javascript , By : helloedwin
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You said typeof (result) is string, hopefully JSON. But if want to iterate over it, then you have to parse as javascript array
var resultArray = JSON.parse(result);
$.each(resultArray, function(index, item) {

About node.js return data to ajax call function


Tag : javascript , By : ChrisMe
Date : March 29 2020, 07:55 AM
wish helps you On your server code. The one with http.createServer(function (req, res) {...}
Notice how you got a req and res parameter?
res.writeHead(/*HTTP_RESPONSE_CODE_FOR_AJAX_CLIENT=*/200);
res.end('Done');

Node.js request.post return undefined


Tag : javascript , By : Nosayaba
Date : March 29 2020, 07:55 AM
it helps some times You can't use return inside a callback to return a value when your function is called. You could pass mysqlVerify a callback (a function which is run once the result is determined) and call it once you get a response, like so:
mysqlVerify = (socialclub_id, session_id, callback) => {
    request({
        url: 'http://myapi.site/VerifyUser',
        method: 'post',
        form: {
            socialclub_id: socialclub_id,
            session_id: session_id
        }
    }, (error, response, body) => {
        if(error) {
            callback(false)       // call the function if false
        } else {
            console.log(response.statusCode, body)
            callback(body == "1") // call the function if condition met
        }
    });
}

Node.js request function return data


Tag : node.js , By : user116330
Date : March 29 2020, 07:55 AM
Hope that helps
What if I want getNumResults() to return responseJSON.results.count? How could I do this?
// load a version of the request library that returns promise instead of
// taking plain callbacks
const rp = require('request-promise');

function getNumResults(url) {
    // returns a promise
    return rp(url).then(body => {
        // make the count be the resolved value of the promise
        let responseJSON = JSON.parse(body);
        return responseJSON.results.count;
    });
}
getNumResults(someURL).then(count => {
    // use the count result in here
    console.log(`Got count = ${count}`);
}).catch(err => {
    console.log('Got error from getNumResults ', err);
});
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