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FileSaver.js Chrome Issue, Multiple documents

I'm using Chrome v67 and FileSaver.js.
This code works in FF & Edge but not in Chrome.
var ajaxSettings = {
url: "my/api/method",
data: JSON.stringify(myItems),
success: function (data) {
if (data) {
var dateToAppend = moment().format("YYYYMMDD-HHmmss");
createPdf("pdfDoc_" + dateToAppend + ".pdf", data[0]);
saveFile("txtDoc_" + dateToAppend + ".txt", data[1]);
//sleep(2000).then(() => {
// saveFile("txtDoc_" + dateToAppend + ".txt", data[1]);
//});
}
}
}
//function sleep(time) {
//return new Promise((resolve) => setTimeout(resolve, time));
//}
function createPdf(filename, pdfBytes) {
if (navigator.appVersion.indexOf("MSIE 9") > -1) {
window.open("data:application/pdf;base64," + encodeURIComponent(pdfBytes));
}
else {
saveFile(fileName, data);
}
}
function saveFile(fileName, data) {
var decodedByte64 = atob(data);
var byteVals = new Array(decodedByte64.length);
for (var i = 0; i < decodedByte64.length; i++) {
byteVals[i] = decodedByte64.charCodeAt(i);
}
var byte8bitArray = new Uint8Array(byteVals);
var blob = new Blob([byte8bitArray]);
saveAs(blob, fileName); //FileSaver.js
}
The result of calling the API is an array with 2 byte arrays in it.
The byte arrays are the documents.
If I run this code, as a user would, then what happens is that the first document gets "downloaded" but the second does not. Attempting to do this a second time without refreshing the page results in no documents being "downloaded". The "download" word is in quotes because it already has been downloaded, what I'm really trying to do is generate the documents from the byte arrays.
This is the strange bit ... if I open the console and place a breakpoint on the "saveFile" call and immediately hit continue when the debugger lands on the breakpoint then all is well with the world and the 2 documents get downloaded.
I initially thought it was a timing issue so I put a 2 second delay on this to see if that was it but it wasn't. The only thing I've managed to get working is the breakpoint which I'm obviously not going to be able to convince the users to start doing no matter how much I want them to.
Any help or pointers are much appreciated

You probably faced a message at the top left corner of your browser stating
https://yoursite.com wants to
Download multiple files
[Block] [Allow]
If you don't have it anymore, it's probably because you clicked on "Block".
You can manage this restriction in chrome://settings/content/automaticDownloads.

QZ tray printing to multiple printers

I have been trying to print to multiple printers with QZ tray using the examples provided here https://qz.io/wiki/2.0-Raw-Printing#promise-loop
but I am getting an error saying TypeError: Cannot read property 'sendData' of null
I have rsvp-3.1.0.min.js, sha-256.min.js and qz-tray.js included.
I use the exact same code provided by the example but obviously changed the printers names to the ones I have installed.
Everything works fine if I try to print to each printer separately (the default way of doing it)
Any idea of what could be wrong or if I am missing a library or something?
Thank you
This is the full error message on Safari:
TypeError: Cannot read property 'sendData' of null
at qz-tray.js:323
at lib$rsvp$$internal$$initializePromise (rsvp-3.1.0.min.js:10)
at new lib$rsvp$promise$$Promise (rsvp-3.1.0.min.js:10)
at Object.promise (qz-tray.js:456)
at Object.dataPromise (qz-tray.js:314)
at Object.find (qz-tray.js:788)
at link (test.html:388)
at lib$rsvp$$internal$$tryCatch (rsvp-3.1.0.min.js:10)
at lib$rsvp$$internal$$invokeCallback (rsvp-3.1.0.min.js:10)
at rsvp-3.1.0.min.js:10

So I found the problem and it was my own mistake, I forgot to initiate QZ tray, the script works perfectly, tested sending a Pixel job to a laser printer and a Raw job to a thermal printer.
EDIT: Solution
function promiseLoop() {
var data = [
"^XA\n^FO50,50^ADN,36,20^FDPRINT 1 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 2 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 3 ^FS\n^XZ\n",
"^XA\n^FO50,50^ADN,36,20^FDPRINT 4 ^FS\n^XZ\n"
];
var configs = [
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" },
{ "printer": "ZDesigner LP2844-Z" }
];
var chain = [];
for(var i = 0; i < data.length; i++) {
(function(i_) {
//setup this chain link
var link = function() {
return qz.printers.find(configs[i_].printer).then(function(found) {
return qz.print(qz.configs.create(found), [data[i_]]);
});
};
chain.push(link);
})(i);
//closure ensures this promise's concept of `i` doesn't change
}
//can be .connect or `Promise.resolve()`, etc
var firstLink = new RSVP.Promise(function(r, e) { r(); });
var lastLink = null;
chain.reduce(function(sequence, link) {
lastLink = sequence.then(link);
return lastLink;
}, firstLink);
//this will be the very last link in the chain
lastLink.catch(function(err) {
console.error(err);
});
}
//Always make sure you are establishing a connection before printing
qz.websocket.connect().then(promiseLoop).catch(errorHandler);

Parse CloudCode order of execution

Im trying to send a push message to everyone with read access every time a new note is saved.
In pseudocode it should get the ACL. Evaluate each member in the ACL and return an array of all users with read access. Then send a push notification to each member.
I've tried running separate task one by one and it works properly. However when I put everything together in the following code I get strange results. Looking at the log I can see it not executing in order as I expect. I first though the getACL call was an asynchronous call so I tried to implement promises with no luck. Then after help from stackoverflow I find out that getACL is not asynchronous therefore the code should just work, right?
This is what I'm trying:
Parse.Cloud.afterSave("Notes", function(request) {
var idsToSend = [];
var i = 0;
console.log("1 start");
var objACL = request.object.getACL();
var ACLinJSON = objACL.toJSON();
console.log("2 ACL = " + ACLinJSON);
for (var key in ACLinJSON) {
if (ACLinJSON[key].read == "true") {
idsToSend[i] = key.id;
console.log("3 i = " + i + " = " + idsToSend[i]);
i++;
}
}
console.log("4 idsToSend = " + idsToSend);
//lookup installations
var query = new Parse.Query(Parse.Installation);
query.containedIn('user', idsToSend);
Parse.Push.send({
where: query,
data: {
alert: "note updated"
}
}, {
success: function() {
console.log("Success sent push");
},
error: function(error) {
console.error("can’t find user"); //error
}
});
});
And this is the response I see from parse log
I2014-08-04T08:08:06.708Z]4 idsToSend =
I2014-08-04T08:08:06.712Z]2 ACL = [object Object]
I2014-08-04T08:08:06.714Z]1 start
I2014-08-04T08:08:06.764Z]Success sent push
Everything is completely out of order??
How can I execute the above function in the way it's written?

I've found the logs are not in order when I run things too, could be a timing issue or something, ignore the order when they're in the same second, I have done other tests to confirm things really do run in order on my own Cloud Code... had me completely confused for a while there.
The issue you're having is that log #3 is never being hit... try tracing ACLinJSON on it's own to see the actual structure. When you append it to a string it outputs [object Object] as you have seen, so do console.log(ACLinJSON); instead.
Here's the structure I've seen:
{
"*":{"read":true},
"Administrator":{"write":true}
}
Based on that I would expect your loop to work, but it may have a different level of wrapping.
UPDATE:
Turns out the issue was looking for the string "true" instead of a boolean true, thus the fix is to replace the following line:
// replace this: if (ACLinJSON[key].read == "true") {
if (ACLinJSON[key].read == true) {

Check for duplicate record in Chrome Storage extension before saving

I'm developing a small Chrome extension that would allow me to save some records to chrome.storage and then display them.
I've managed to make the set and get process work as I wanted (kinda), but now I'd like to add a duplicate check before saving any record, and I'm quite stuck trying to find a nice and clean solution.
That's what I came up for now:
var storage = chrome.storage.sync;
function saveRecord(record) {
var duplicate = false;
var recordName = record.name;
storage.get('records', function(data) {
var records = data.records;
console.log('im here');
for (var i = 0; i < records.length; i++) {
var Record = records[i];
if (Record.name === recordName) {
duplicate = true;
break;
} else {
console.log(record);
}
}
if (duplicate) {
console.log('this record is already there!');
} else {
arrayWithRecords.push(record);
storage.set({ bands: arrayWithRecords }, function() {
console.log('saved ' + record.name);
});
}
});
}
I'm basically iterating on the array containing the records and checking if the name property already exists. The problem is it breaks basic set and get functionality -- in fact, when saving it correctly logs 'im here' and the relative record object, but it doesn't set the value. Plus, after a while (generally after trying to list the bands with a basic storage.get function) it returns this error:
Error in response to storage.get: TypeError: Cannot read property
'name' of null
I'm guessing this is due to the async nature of the set and get and my incompetence working with it, but I can't get my head around it in order to find a better alternative. Ideas?
Thanks in advance.

javascript undefined error, but alert toSource shows the object exists

I grabbed a bit of code to do some paging with jQuery, via Luca Matteis here
Paging Through Records Using jQuery
I've made some edits to the paging script so that I can use the same code to provide paging of different content in different locations on the same site.
For the most part, I think it works, except that I get a jsonObj is undefined error in firebug.
When I use alert(jsonObj.toSource()), I am shown the variables that I am trying to populate, but at the same time, the script dies because of the error.
I can't figure out why I am getting this conflict of 'undefined' and yet I can easily out put the 'undefined' values in an alert. I can even say alert(jsonObj.name), and it will give me that value, but still launch an jsonObj is undefined error.
Here's the code I'm using
var pagedContent = {
data: null
,holder: null
,currentIndex : 0
,init: function(data, holder) {
this.data = data;
this.holder=holder;
this.show(0); // show last
}
,show: function(index) {
var jsonObj = this.data[index];
if(!jsonObj) {
return;
}
var holdSubset='';
for(i=0;i<=4; i++){
jsonObj=this.data[index+i];
this.currentIndex = index;
if(this.holder=='div#firstList'){
var returnedId = jsonObj.id;
var returnedName = jsonObj.name;
var calcScore=this.data[index+i].score/this.data[0].score*100;
var resultInput="<div ' id='"+returnedId+"'><div class='name'>"+returnedName+"</div><div class='score'><div style='width:"+calcScore+"%;'></div></div>";
}
if(this.holder=='div#secondList'){
var name=jsonObj.name;
var city=jsonObj.city;
var region=jsonObj.state;
var resultInput='<li><div>'+name+'</div<div>'+city+'</div><div>'+region+'</div></li>';
}
holdSubset= holdSubset+resultInput;
}
jQuery(this.holder).html('<br/>'+holdSubset);
if(index!=0){
var previous = jQuery("<a>").attr("href","#").click(this.previousHandler).text("< previous");
jQuery(this.holder).append(previous);
}
if(index+i<this.data.length){
var next = jQuery("<a style='float:right;'>").attr("href","#").click(this.nextHandler).text("next >");
jQuery(this.holder).append(next);
}
}
,nextHandler: function() {
pagedContent.show(pagedContent.currentIndex + 5);
return false;
}
,previousHandler: function() {
pagedContent.show(pagedContent.currentIndex - 5);
return false
}
};
I call the function like this
pagedContent.init(json.users.locations, 'div#secondList');
The json looks like this
{"locations" : [ {"id":"21319","name":"Naugatuck American Legion","city":"Ansonia","region":"Connecticut"},{"id":"26614","name":"Studio B789","city":"Acton","region":"Maine"},{"id":"26674","name":"Deering Grange Hall","city":"Bailey Island","region":"Maine"},{"id":"27554","name":"Accu Billiards","city":"Acushnet","region":"Massachusetts"}]}

I may have found the problem with your code:
for(i=0;i<=4; i++){
jsonObj=this.data[index+i];
(...)
When you call show(0) you set index to 0. You expect a fixed number of items in the array (5 in the range [0..4]) but there are only 4 locations in your data.

If you are using console.log to trace the problems in firebug you might find that it is a problem with firebug. Try just running console.log on it's own.
If it is a problem with firebug try updating it. There are some development versions around which might fix the problem.
I had a similar problem and fixed it by doing the above.