Create a tally system with JavaScript

2018-04-14 15:49 Bradley imported from Stackoverflow

I would like to create a simple tally system to record the data-id from the elements that are selected and combine the data-id values at the end to generate a result.

function myAnswer() {
  document.getElementById('btnNxt').removeAttribute('disabled');
  var myResult = '';
  var iId = this.getAttribute('data-id');
  myObj[page].mySel = iId;
  myQueRep[page] = iId;
  console.log(iId);
  for (var x = 0; x < btn.length; x++) {
    if (iId == x) {
      btn[x].classList.add('selAnswer');
    } else {
      btn[x].classList.remove('selAnswer');
    }
 }

}

In this section, the iId variable gets the data-id value but I'm not sure how to tally the selections up and display a result based on that score.

JSFiddle of current code:

https://jsfiddle.net/mkykmg15/2/

1 answer

answered 2018-04-14 16:04 A. Lau

You should be doing something with your myQueRep.

So something like:

var myQueRep = ["1", "1", "1", "2", "2", "2"]

var tally = myQueRep.reduce( function (acc, curr) {
  return acc + +curr
}, 0);

console.log(tally)

See also questions close to this topic

Load SpreadJS using nodeJS
I am trying to load spreadJS using nodeJS using this doc. I running this from command prompt.

I read the file and then loaded it using given code, but wb.fromJSON(data) giving the error Cannot read property 'do' of undefined
```
var file = fs.readFileSync('./billingInvoiceTemplate.xlsx');
excelIO.open(file.buffer, (data) => {       
    try {
        wb.fromJSON(data);// Cannot read property 'do' of undefined
    } catch (e) {
        console.error(e);
    }
   ..................
   ..................
   ..................
```
My entire code is same as given in the above doc.

Your help will be highly appreciated..

Problem with calling array wrt children hierarchy

I have main array namely "tree"; I have to assign some value to children of tree using array [0,0,1]. That means,

   tree = {
     "name": "cal",
     "children": [{
       "name": "a",
        "children": [{
           "name": "b",
            "children": [{}, {
               "name": "bb"
           }]
        }, {}]
    }, {}]
  }

  tree.children[0].children[0].children[1] = "somvalue";

I tried using "eval"

  eval("tree.children[0].children[0].children[1] = 'somevalue'")

But that is not giving proper output to me. Is there any other way I can achieve this. I just need to map array of index to children hierarchy

I do not get any response in my mqtt app running on node.js

I'm trying to subscribe to a mqtt brocker, but nothing I nothing happens when I run the code on the node.js

var mqtt = require('mqtt')
const address = "mqtt://myaddress"
const port = 1883
const user = 'iot'
const pass = 'iot2017'

var options = {port: port, user: user, password: pass, debug: true, 
onSuccess: function () {
     console.log("Connected");
 },

 //Gets Called if the connection could not be established
 onFailure: function (message) {
     console.log("Connection failed: " + message.errorMessage);
 }}
 var client  = mqtt.connect(address, options)

client.on('connect', function () {
console.log('connected')
client.subscribe('iotmehow/temp', function (err) {
console.log('subscribe temp')
if (!err) {
  client.publish('presence', 'Hello mqtt')
}
else{
    console.log('subscribe error')
    console.log(err)
 }
 })
})

client.on('message', function (topic, message) {
 console.log('message')
 console.log(message)
 client.end()
})

client.on('error', function (topic, message) {
  // message is Buffer
  console.log('error')
  console.log(message)
  //client.end()
})

It works when I use this code from github:

 var mqtt = require('mqtt')
 var client  = mqtt.connect('mqtt://test.mosquitto.org')

client.on('connect', function () {
client.subscribe('presence', function (err) {
if (!err) {
  client.publish('presence', 'Hello mqtt')
  }
 })
})

client.on('message', function (topic, message) {
 // message is Buffer
console.log(message.toString())
 client.end()
  })

I have no response from my code, nor onSuccess neither onFailure shows anything. I am using node v6.10.2 and windows 10

Related questions

Create a tally system with JavaScript

1 answer

See also questions close to this topic