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Store webkitSpeechRecognition in browser (indexeddb)

For a project I've implemented a web speech api in a website/Progressive Web App which translates spoken voice to text. This all works fine, however, I would also like to use this without access to internet.
My initial thought was that I could save my recognition object to a indexeddb and process it later. However, when I try to do this I get the following error:
DOMException: Failed to execute 'put' on 'IDBObjectStore': SpeechRecognitionEvent object could not be cloned.
While I do understand why I get this error, I have no clue on any alternative way of doing this or how I can solve this error.
My object looks as following:
When I try to serialize my object using JSON.stringify() I get the following:
I lose all of my information.
My code looks as follows:
function attachRecognition() {
recognition = new webkitSpeechRecognition();
recognition.continuous = false;
recognition.interimResults = false;
recognition.maxAlternatives = 1;
recognition.onstart = function(event) {
recognitionStarted = true;
};
recognition.onend = function(event) {
recognitionStarted = false;
};
recognition.onresult = function(event) {
var finalPhrase = '';
var interimPhrase = '';
var result;
for(var i=0; i<event.results.length; ++i) {
result = event.results[i];
if( result.isFinal ) {
finalPhrase = finalPhrase.trim() + ' ' + result[0].transcript;
}
else {
interimPhrase = interimPhrase.trim() + ' ' + result[0].transcript;
}
}
var input_field = $(related_input_field);
if (connected) {
input_field.val(input_field.val() + finalPhrase + ".");
}
// This is where I would store my event data in case there's no connection.
else {
set(related_input_field.attr("id"), event)
.then(() => {
console.log(related_input_field.attr("id") + ' data cached');
})
.catch(console.warn);
}
}
}
How can I solve this?

How to add and display two different cities with OpenWeather API on a button click using xhr

I am running into a problem of when the user clicks on either the toronto or sudbury button it will only display one city weather temperature, conditions, and sunset information. This occurs because the page loads only one using one city API, i was wondering how i can call mutliple cities on openweather API using xhr
Below is the code i have tried to use to display the toronto weather and sudbury weather after the button click.
window.onload = function () {
let our_location = document.getElementById("location");
let our_temperature = document.getElementById("temperature");
let our_conditions = document.getElementById("conditions");
let our_sunset = document.getElementById("sunset");
let myAPIKey = "6b50d1fca9d05c7084f78a07d8fabaee";
let url =
"https://api.openweathermap.org/data/2.5/weather?q=Toronto,Sudbury&appid=" +
myAPIKey +
"&units=metric";
let xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
const data = xhr.response;
console.log(xhr);
let torontoBtn = document.getElementById("Toronto");
let sudburyBtn = document.getElementById("Sudbury")
function torontoButton() {
our_location.innerHTML = data.name;
our_temperature.innerHTML = data.main.temp;
our_conditions.innerHTML = data.weather[0].description;
our_sunset.innerHTML = data.sys.sunset;
output.style.display = "block";
}
torontoBtn.onclick = torontoButton;
function sudburyButton() {
our_location.innerHTML = data.name;
our_temperature.innerHTML = data.main.temp;
our_conditions.innerHTML = data.weather[0].description;
our_sunset.innerHTML = data.sys.sunset;
output.style.display = "block";
}
sudburyBtn.onclick = sudburyButton;
}
}
};
let output = document.getElementById("output");
xhr.open('GET', url);
xhr.responseType = "json";
xhr.send(null);
};

JavaScript - Self-invoking function can't see functions from external script

I have a conceptual issue about scopes on the following code.
The code is a simple client-side validation script for two forms.
I used a self-invoking function to try a something different approach by avoiding to set all global variables but its behavior seems a bit weird to me.
I am still learning to code with JavaScript and I'm not an expert, but these advanced features are a bit complicated.
I don't want to use jQuery but only pure JavaScript in order to learn the basis.
<!-- Forms handling -->
<script src="validate_functions.js"></script>
<script>
(function main() {
var frmPrev = document.getElementById('frmPrev');
var frmCont = document.getElementById('frmCont');
var btnPrev = frmPrev['btnPrev'];
var btnCont = frmCont['btnCont'];
var caller = '';
var forename = '';
var surname = '';
var phone = '';
var email = '';
var privacy = '';
var message = '';
var infoBox = document.getElementById('info-box');
var infoBoxClose = infoBox.getElementsByTagName('div')['btnClose'];
btnPrev.onclick = function(e) {
submit(e);
};
btnCont.onclick = function(e) {
submit(e);
};
function submit(which) {
caller = which.target.name;
var errors = '';
if(caller == 'btnPrev') {
forename = frmPrev['name'].value.trim();
surname = frmPrev['surname'].value.trim();
phone = frmPrev['phone'].value.trim();
email = frmPrev['email'].value.trim();
message = frmPrev['message'].value.trim();
privacy = frmPrev['privacy'].checked;
}
if(caller == 'btnCont') {
phone = frmCont['phone'].value.trim();
email = frmCont['email'].value.trim();
message = frmCont['message'].value.trim();
}
errors = validateFields(caller, forename, surname, phone, email, privacy, message);
if(errors == '') {
var params = 'which=' + caller;
params += '&fname=' + forename;
params += '&sname=' + surname;
params += '&tel=' + phone;
params += '&email=' + email;
params += '&priv=' + privacy;
params += '&mess=' + message;
var request = asyncRequest();
request.open('POST', "send-mail.php", true);
request.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
request.setRequestHeader('Content-length', params.length);
request.setRequestHeader('Connection', 'close');
request.onreadystatechange = function() {
if(this.readyState == 4) {
if(this.status == 200) {
if(this.responseText != null) {
infoBox.innerHTML = this.responseText;
} else {
infoBox.innerHTML = '<p>No data from server!</p>';
}
} else {
infoBox.innerHTML = '<p>Could not connect to server! (error: ' + this.statusText + ' )</p>';
}
}
}
request.send(params);
} else {
infoBox.innerHTML = errors;
}
infoBox.style.display = 'block';
}
infoBoxClose.onclick = function() {
infoBox.style.display = 'none';
infoBox.innerHTML = '';
};
function validateFields(_caller, _forename, _surname, _phone, _email, _privacy, _message) {
var errs = '';
if(_caller == 'btnPrev') {
errs += validateForename(_forename);
errs += validateSurname(_surname);
errs += validatePhone(_phone);
errs += validateEmail(_email);
errs += validateMessage(_message);
errs += validatePrivacy(_privacy);
}
if(_caller == "btnCont") {
errs += validatePhone(_phone);
errs += validateEmail(_email);
errs += validateMessage(_message);
}
return errs;
}
function asyncRequest() {
var request;
try {
request = new XMLHttpRequest();
}
catch(e1) {
try {
request = new ActiveXObject('Msxml2.XMLHTTP');
}
catch(e2) {
try {
request = new ActiveXObject('Microsoft.XMLHTTP');
}
catch(e3) {
request = null;
}
}
}
return request;
}
})();
Web console keeps telling me that single validate functions are not defined.
Why?
They should be loaded from the external script.. furthermore they should have a global scope.
Thank you in advance :)

Problem solved!
The path to the external script was incorrect.
Sorry for this rubbish! ^^"

Javascript - FileReader how can I read and process each file at a time among multiple files

I am trying let the user drop multiple excel file and extract desired values from each one of the files and upload it to website ONE FILE AT A TIME.
My code is not working, and I am assuming this is because of the callback problem..
Could anybody help?
Edit: I also added my uploadFile function. I very much appreciate your help.
for(var i = 0; i < fileList.length; i++) {
//console.log(fileList[i]["file"]);
var reader = new FileReader();
var f = fileList[i]["file"];
//var fName = fileList[i]["fileName"];
var excelObject = fileList[i];
reader.onload = function(ev) {
var data = ev.target.result;
if(!rABS) data = new Uint8Array(data);
var wb = XLSX.read(data, {type: rABS ? 'binary' : 'array'});
var einAddress = "B3";
var engCodeAddress = "B1";
var goAddress = "B2";
var errMsg = tabName + " tab or required value is missing";
// Worksheet with the necessary info
try{
var ws = wb.Sheets[tabName];
var ein_cell = ws[einAddress];
ein = (ein_cell ? ein_cell.v.toString() : undefined);
var eng_cell = ws[engCodeAddress];
engCode = (eng_cell ? eng_cell.v.toString() : undefined);
var go_cell = ws[goAddress];
goLocator = (go_cell ? go_cell.v.toString() : undefined);
if(ein == undefined || engCode == undefined || goLocator == undefined){
hasValues = false;
}
excelObject["EngagementCode"] = engCode;
excelObject["GoSystem"] = goLocator;
excelObject["EIN"] = ein;
if(hasValues && isValid){
uploadFile(fileList[i], userInfo);
} else {
noValueErrorHandler(errMsg);
}
} catch(err){
hasValues = false;
}
};
if(rABS) reader.readAsBinaryString(f); else reader.readAsArrayBuffer(f);
}
function uploadFile(f, userInfo) {
// Define the folder path for this example.
var serverRelativeUrlToFolder = listName;
// Get info of the file to be uploaded
var file = f;
var fileInput = file["file"];
var newName = file["fileName"];
var ein = file["EIN"];
var engCode = file["EngagementCode"];
var email = userInfo;
var goLocator = file["GoSystem"];
console.log("file: " + file);
// Get the server URL.
var serverUrl = _spPageContextInfo.siteAbsoluteUrl + "/StatusTracker";
// Initiate method calls using jQuery promises.
// Get the local file as an array buffer.
var getFile = getFileBuffer(fileInput);
getFile.done(function (arrayBuffer) {
// Add the file to the SharePoint folder.
var addFile = addFileToFolder(arrayBuffer, newName);
addFile.done(function (file, status, xhr) {
// Get the list item that corresponds to the uploaded file.
var getItem = getListItem(file.d.ListItemAllFields.__deferred.uri);
getItem.done(function (listItem, status, xhr) {
// Change the display name and title of the list item.
var changeItem = updateListItem(listItem.d.__metadata);
changeItem.done(function (data, status, xhr) {
processedCount += 1;
if (processedCount < fileCount) {
uploadFile(fileList[processedCount], email);
} else if (processedCount == fileCount){
$("#dropbox").text("Done, drop your next file");
$("#ADMNGrid").data("kendoGrid").dataSource.read();
fileList = [];
alert("Total of " + processedCount + " items are processed!");
}
// Refresh kendo grid and change back the message and empty fileList
//$("#dropbox").text("Drag your Fund/Lower Tier workpaper here ...");
//location.reload(true);
});
changeItem.fail(onError);
});
getItem.fail(onError);
});
addFile.fail(onError);
});
getFile.fail(onError);

You might put the whole thing into an async function and await a Promise for each iteration, forcing the files to be processed in serial. You didn't post your uploadFile, but if you have it return a Promise that resolves once it's done, you could do the following:
async fn() {
for (var i = 0; i < fileList.length; i++) {
await new Promise((resolve, reject) => {
//console.log(fileList[i]["file"]);
var reader = new FileReader();
var f = fileList[i]["file"];
//var fName = fileList[i]["fileName"];
var excelObject = fileList[i];
reader.onload = function(ev) {
var data = ev.target.result;
if (!rABS) data = new Uint8Array(data);
var wb = XLSX.read(data, {
type: rABS ? 'binary' : 'array'
});
var einAddress = "B3";
var engCodeAddress = "B1";
var goAddress = "B2";
var errMsg = tabName + " tab or required value is missing";
// Worksheet with the necessary info
try {
var ws = wb.Sheets[tabName];
var ein_cell = ws[einAddress];
ein = (ein_cell ? ein_cell.v.toString() : undefined);
var eng_cell = ws[engCodeAddress];
engCode = (eng_cell ? eng_cell.v.toString() : undefined);
var go_cell = ws[goAddress];
goLocator = (go_cell ? go_cell.v.toString() : undefined);
if (ein == undefined || engCode == undefined || goLocator == undefined) {
hasValues = false;
}
excelObject["EngagementCode"] = engCode;
excelObject["GoSystem"] = goLocator;
excelObject["EIN"] = ein;
if (hasValues && isValid) {
uploadFile(fileList[i], userInfo)
.then(resolve);
} else {
noValueErrorHandler(errMsg);
reject();
}
} catch (err) {
hasValues = false;
reject();
}
};
if (rABS) reader.readAsBinaryString(f);
else reader.readAsArrayBuffer(f);
});
}
}

When pushing user to array, multiple Array's being created

I'm creating an application (chat app) and I'm pushing each username to an array. Using socket.io, whenever I call an event to push the username to the client side array, multiple instances of the array are created.
For example, the first user I log is fine, Then when another user is added, the array will double, then triple and so on. Thank you in advance for the help . The emit event in which I'm doing this is in the USERS_CONNECTED event.
I am also sorry for the terrible sloppiness of the code below.
Server
const express = require('express');
const fs = require('fs');
const path = require('path');
const http = require('http');
const socketIO = require('socket.io');
const publicPath = path.join(__dirname, 'public');
const port = process.env.PORT || 3001;
let app = express();
let server = http.createServer(app);
var io = socketIO(server);
let username;
app.use(express.static(publicPath));
let usersOnline = []; //keeps track of current users online
io.on('connection', (socket) => {
let user = socket.id;
socket.emit('user', user);
socket.id = "anon";
socket.on('new user', function(data,callback) {
//if user name is taken
if(usersOnline.indexOf(data) != -1 || data == ''){
callback(false);
}else{
//if username is not taken
callback(true);
socket.id = data;
username = data;
//pushes data(username) to data
usersOnline.push(socket.id);
//sends back to client usersOnline array
io.sockets.emit('USERS_CONNECTED', {usersOnline: usersOnline, user: socket.id});
console.log(usersOnline.length)
}
});
socket.on('disconnect', () => {
usersOnline.splice(usersOnline.indexOf(socket.id), 1);
//emits count users, sets current user
io.sockets.emit('USERS_CONNECTED', {usersOnline: usersOnline, user: socket.id});
console.log(usersOnline.length)
});
socket.on('send msg' , function(data){
io.sockets.emit('send msg', {msg: data, user: socket.id});
})
});
server.listen(port, () => {
console.log('server is running master')
});
Client
let socket = io();
let input = document.querySelector('#input_username');
let form = document.querySelector('form')
let userName_page = document.querySelector(".userName_page");
let chat_page = document.querySelector(".chat_page");
let chatWrapper = document.querySelector(".chat_wrapper")
let counter = document.getElementById("counter");
let users = document.querySelector(".users_online")
let join_btn = document.querySelector(".button-effect")
let msg_input = document.querySelector("#sendMsg");
let btn_send = document.querySelector("#send_btn");
let onlineUsers = [];
let sent_ = document.querySelector(".sent_");
let receive_ = document.querySelector(".receive_");
let newUser_text = document.querySelector(".welcome_box")
let user;
let isTyping = document.querySelector('#isTyping')
let welcome_header = document.querySelector("#welcome_header");
let users_online_container = document.querySelector(".users_online");
join_btn.addEventListener("click", function(e){
e.preventDefault();
user = input.value;
//sets user name to input.value
socket.emit('new user', input.value, function(data){
if(data){
userName_page.style.display = "none"
chat_page.style.display = "flex";
welcome_header.innerHTML = input.value + ' has joined the party';
addAnimation();
}else{
if(input.value == ''){
input.classList.add("input_error");
let error_msg = document.getElementById('error_input');
error_msg.innerHTML = '*Invalid, Please Type a Username'
error_msg.style.display = "block";
input.style.border = "2px solid #d9534f";
}else{
input.classList.add("input_error");
let error_msg = document.getElementById('error_input');
error_msg.style.display = "block";
error_msg.style.border = "2px solid #d9534f"
error_msg.innerHTML = "Woops, sorry but that user name is already taken, please try again";
}
}
});
//sets up new user
socket.on('USERS_CONNECTED' , function (data){
//counts online users currently
counter.innerHTML = (data.usersOnline.length + " Online");
for(let i = 0; i < data.usersOnline.length; i++){
onlineUsers.push(data.usersOnline);
let h = document.createElement("h3");
fish.appendChild(h);
}
console.log(onlineUsers)
});
});
//msg send
btn_send.addEventListener('click', function(){
socket.emit('send msg', msg_input.value);
});
//checks if enter is pressed, if so emits message to chat
function search(ele) {
if(event.key === 'Enter') {
socket.emit('send msg', msg_input.value);
}
}
//send message events
socket.on('send msg', function(data){
if(data.user == user){
//sender logic
msg_input.value = '';
let p = document.createElement('p');
receive_.append(p);
p.innerHTML = "<span class = 'er'>" + 'You' + "</span>" + ": " + data.msg;
p.style.textAlign = 'right';
p.style.backgroundColor = "#5cb85c";
p.style.justifyContent = "flex-end";
p.style.paddingRight = "2em";
}
else{
//receiver logic
msg_input.value = '';
let p = document.createElement('p');
receive_.append(p);
p.innerHTML = "<span class = 'er'>" + data.user + "</span>" + ": " + data.msg;
p.style.textAlign = 'left';
p.style.backgroundColor = "#5bc0de";
p.style.paddingLeft = "2em";
};
//makes sure scroll stays at bottom
receive_.scrollTop = receive_.scrollHeight;
});
function addAnimation(){
newUser_text.classList.add("act");
}
$( document ).ready(function(){
let header = document.querySelector(".feedback");
var timeout;
function timeoutFunction() {
typing = false;
socket.emit("typing", false);
}
$('#sendMsg').keyup(function() {
typing = true;
socket.emit('typing', 'typing...');
clearTimeout(timeout);
timeout = setTimeout(timeoutFunction, 5000);
});
socket.on('typing', function(data) {
if (data) {
$('#isTyping').html(data);
$('#isTyping').classList.add('act')
} else {
$('#isTyping').html("");
}
});
})

You should replace whole array on client side instead of push. Just stack trace your code:
Firstable on connection on server side you pushes new user id to usersOnline array and emits that array in object via USERS_CONNECTED event in usersOnline property. Client receives that object and pushes object of users (NOT exactly one new user) to onlineUsers array. So eg. 1 user connects to server, usersOnline array would be:
[ 'user1' ]
Then second user connects to server:
[ 'user1', 'user2' ]
And that array is being sent to user2, that is whole object sent by USERS_CONNECTED event would be:
{ usersOnline: [ 'user1', 'user2' ], user: 'user2' }
Now in client instead of replacing you are pushing whole new array, so instead [ 'user1', 'user2' ] you gets [ [ 'user1', 'user2' ] ]