I'm not sure if I'm gettin it right but I just started to use this jQuery-CSV parser plugin. I wanted to parse CSV file I have stored locally and then, based on results I get from it, use either jQuery's or ajax's notation to get certain data out of urls I provide.
var $ = jQuery = require('jQuery')
require ('./jquery.csv.js')
var sample = './analytics.csv';
fs.readFile(sample, 'UTF-8', function(err, csv) {
$.csv.toObjects(csv, {}, function(err, data) {
for(var i=0, len=data.length; i<len; i++) {
var link = toLink(data[i].Page)
$.get( link, function(data){
data[i].Category = $('.category').get(0)
});
console.log(data[i])
}
});
});
I'm getting back an error:
$.get(link, function (data){
^
TypeError: $.get is not a function
at main (E:\Programowanie\lolStats\index.js:16:7)
at Object.<anonymous> (E:\Programowanie\lolStats\index.js:37:1)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
It seems to me like it's looking for get() function in the jquery.csv.js file instead of regular jquery module I've installed for this project. What would be the easiest way to make both .csv.functions and regular jquery ones work in a same file?
Related
I'm trying to familiarise myself with HapiJS and have been playing around with it this week, I've run into a problem with plugins and paths. I get an error regarding the path I specify when I require a file. I can't use " ./ " without getting an error. The only way to overcome the error is to use the full complete path.
Here's my code that works:
'use strict';
const indexController = require('/Users/mylaptop/docker-node/controllers/IndexController.js');
module.exports.plugin = {
name: 'myPlugin',
version: '1.0.0',
register: async function (server, options) {
// Create a route for example
server.route({
method:'GET',
path:'/test',
handler: function (request, h) {
return indexController.loadIndex(h);
}
});
}
};
However, if I try to require my IndexController file this way:
const indexController = require('./controllers/IndexController.js');
Then I get this error:
internal/modules/cjs/loader.js:583
throw err;
^
Error: Cannot find module '/Users/mylaptop/docker-node/Users/mylaptop/docker-node/controllers/IndexController.js'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
at Function.Module._load (internal/modules/cjs/loader.js:507:25)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:22:18)
at Object.<anonymous> (/Users/mylaptop/docker-node/config/routes/index.js:5:25)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
It doesn't work inside of my plugin, yet outside of my plugin, requiring files this way works fine.
What could be the problem? How can I solve it?
Thanks in advance.
Problem solved with:
const indexController = require('../../controllers/IndexController.js');
My project root folder was 2 directories away, hence ../../ working for me.
I was taking a Udemy course, here is my code for an exercise that I was doing.
Faker is a package downloaded from the NPM library
var faker = require("faker");
console.log("+++++++++++++++++++");
console.log("Welcome to my shop!");
console.log("+++++++++++++++++++");
var data = faker.commerce.productName();
data.forEach(function(print){
console.log(data);
});
I was expecting the code to iterate over every item in the variable "data" and print the result, however this is the result I get
+++++++++++++++++++
Welcome to my shop!
+++++++++++++++++++
/home/ubuntu/workspace/node_practice/demo_app/app.js:8
data.forEach(function(print){
^
TypeError: data.forEach is not a function
at Object.<anonymous> (/home/ubuntu/workspace/node_practice/demo_app/app.js:8:6)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:389:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:504:3
I am using Cloud9 ide, why am I getting this error?
You should read the faker documentation.
https://cdn.rawgit.com/Marak/faker.js/master/examples/browser/index.html#commerce
faker.commerce.productName() is a string. Those don't have a prototype.forEach()
If you'd like to generate a set of names you can use Array.from() with faker like so:
let products = Array
.from({length: 100})
.map(faker.commerce.productName)
You now have an Array of 100 product name
I am newbie to Javascript/jquery. I am writing a simple js file that parses a csv file.
var jquery = require('jquery');
jquery.get('file.csv', function(data) {
alert(data); // this is a line
var tempArray = data.split(','); // array of data
for(var i = 0; i < tempArray.length; i++)
{
console.log(tempArray[i]); // probably index 1 is your IPv6 address.
}
});
When I run the code above, I get the following error:
jquery.get('file.csv', function(data) {
^
TypeError: jquery.get is not a function
at Object.<anonymous> (/Users/ishabir1/Desktop/transloc/parser.js:3:8)
at Module._compile (module.js:410:26)
at Object.Module._extensions..js (module.js:417:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)
at Function.Module.runMain (module.js:442:10)
at startup (node.js:136:18)
at node.js:966:3
[Finished in 0.1s with exit code 1]
Can someone please advise? Thanks!
You cannot use jQuery like that in the Node.js realm.
You need to rely on the fs module for reading files, and on a csv library for actually parsing your data, see example:
var fs = require('fs');
var parse = require('csv').parse;
var parser = parse(function(err, data){
console.log(data);
});
fs.createReadStream('file.csv').pipe(parser);
Don't forget to run npm install csv before requiring it!
I am working through Brad Dayley's Node.js, MongoDB and Angularjs book and I'm stuck on one of his exercises (Listing 4.4). I have a simple script emitterListener.js that is as follows the script is designed to makes checks on an account.
var events = require('events');
function Account() {
this.balance = 0;
events.EventEmitter.call(this);
this.deposit = function(amount) {
this.balance += amount;
this.emit('balanceChanged');
};
this.withdraw = function(amount) {
this.balance -= amount;
this.emit('balanceChanged');
};
}
Account.prototype._proto_ = events.EventEmitter.prototype;
function displayBalance() {
console.log("Account balance: $%d", this.balance);
}
function checkOverdraw() {
if (this.balance < 0) {
console.log("Account Overdrawn!!!!!");
}
}
function checkGoal(acc, goal) {
if (acc.balance > goal) {
console.log("Goal Achieved!!!!!");
}
}
var account = new Account();
account.on("balanceChanged", displayBalance);
account.on("balanceChanged", checkOverdraw);
account.on("balanceChanged", function() {
checkGoal(this, 1000);
});
account.deposit(220);
account.deposit(320);
account.deposit(600);
account.withdraw(1200);
When I run this I get the error.
TypeError: Object #<Account> has no method 'on'
at Object.<anonymous> (/Users/506132/web/emitterListener.js:35:9)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:906:3
From my limited understanding after researching I think this means that the "on" module is not being loaded. I found a solution that suggested something similar to adding this to line 1
var events = require('events').on;
which then results in the error.
TypeError: Cannot read property 'EventEmitter' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:16:35)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:906:3
Following the logic from the first fix I tried implementing the same fix but with EventEmitter
var events = require('events').EventEmitter;
Hooray it looks like it worked.... or not......and now I get this error
TypeError: Cannot read property 'prototype' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:17:48)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:906:3
I tried adding the below code thinking why not?
var events = require('events').prototype;
and it just brings me back to the same error from before
TypeError: Cannot read property 'EventEmitter' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:16:35)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:906:3
What am I doing wrong here? How should I go about debugging this and where should I look? Thanks in advance for helping a newbie out.
Cheers.
process.EventEmitter is deprecated, use require('events') instead.
Search through all your reference files (should be in multiple files) for:
var EventEmitter = process.EventEmitter
An where ever it exists, change that line to this:
var EventEmitter = require('events')
I'll post it as an answer so this question won't get marked as unanswered.
You should change:
Account.prototype.__proto__ = events.EventEmitter.prototype;
to:
Account.prototype = Object.create(events.EventEmitter.prototype);
var EventEmitter = process.EventEmitter
is deprecated in high version of node, use var EventEmitter = require('events') instead
This compilation error because of versions conflicts of npm and node. I had the same issue in my project. I resolved after install the same compatible versions of npm and node as on another machine.
Check:
nmp -v
and
node -v.
All the confusion with the actual example is the first line of code.
var events = require('events');
After Node v6.1.0 this line of code will store EventEmmiter object inside events variable, so there is no need to access it explicitly later.
Solution is very simple, just change
events.EventEmitter.call(this);
to:
events.call(this)
And change
Account.prototype._proto_ = events.EventEmitter.prototype;
to:
Account.prototype._proto_ = events.prototype;
I had the same problem a few minutes ago, I decided to downgrade node to version 6.x, then it worked
I'm just trying to run html-snapshots. This should be easy, right?
This is what I started with:
npm install html-snapshots
That's all I need, right? Here's my snapshots.js file:
var htmlSnapshots = require('html-snapshots');
htmlSnapshots.run({
source: "sitemap.xml",
hostname: "localhost",
outputDir: "snapshots",
outputDirClean: true,
selector: "#results-widget"
});
And to run it:
node snapshots.js
But nooo:
module.js:340
throw err;
^
Error: Cannot find module '.\robots'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.module.exports.create (C:\webdev\node_modules\html-snapshots\lib\input-generators\index.js:38:16)
at Object.module.exports.run (C:\webdev\node_modules\html-snapshots\lib\html-snapshots.js:42:39)
at Object.<anonymous> (C:\webdev\snapshots.js:2:15)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
wtf?
Additional Info...
This is part of html-snapshots.js:
var inputFactory = require("./input-generators");
...
run: function(options, listener) {
...
var inputGenerator = inputFactory.create(options.input);
...
result = inputGenerator.run(options, (function(options, notifier){
Also, the html-snapshots\lib\input-generators folder contains the file robots.js
It looks like an issue inside html-snapshots\lib\input-generators\index.js file - it works fine on Linux systems but fails on Windows (path.sep has been used to build module name)
Problem is that it should load './robots' module instead of '.\robots'.
Quick fix is to update html-snapshots\lib\input-generators\index.js file - line 38.
Change line:
result = require(file);
to:
result = require(path.join(__dirname, file));
And it will work fine. I hope that will help.