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Using three.js: .glb 3d model shows up locally but not on github server, receive SyntaxError: Json.parse

I tried to use three.js to display a 3d model in my personal webpage. The model can be successfully displayed on my local server, however it failed to show up on my web server and I got an error like this:
(links to my .glb file, the main.js, and the index.html file)
I opened my browser web tools and the HTTP response data of my .glb model looks like this:
Any ideas would be highly appreciated.

BH
currently the main.js file looks like this:
$(document).ready(function(){
$nav = $('.nav');
$toggleCollapse = $('.toggle-collapse');
/** click event on toggle menu */
$toggleCollapse.click(function(){
$nav.toggleClass('collapse');
})
});
so it's hard to say exactly what the problem is now, but I'm guessing it was different before.
Without knowing the details of the server code [since you said it was fine in your local server but not on your main server] it's difficult to know the exact details of the issue, but one alternative for loading models without any server at all [but also works through servers] is by making another program [HTML file] that creates a JavaScript loadable file containing the data URL of the file loaded, which can then be included into the main HTML file with a standard script tag [or programmatically], then with the THREE.JS model loader, simply use the dataURL instead of the model URL.
I've persoanlly used this method many times without any server, not even a local server, and I've been able to load all kinds of models [and other files in general].
An example HTML file / code would look something like this:
BH
<br>
data URL-ifier
<br>
<input id="filePicker" type="file">
<br>
<div id="kinTayner"></div>
<script>
filePicker.onchange = () => {
var fr = new FileReader()
fr.onload = () => {
a = document.createElement("a")
kinTayner.innerHTML=""
a.download = filePicker.files[0].name+".html"//or .js,
//but .html files can actually be included in a
//project the same as JS scripts, which can be
//useful if you want to view it quickly in the
//browser
a.innerHTML = "Downlaod the DATA-Urlifier file?!"+
"<br>On GitHub might have to right click->save link as"
var id=Date.now()
a.href = URL.createObjectURL(new Blob([
`
/*BH
\n
<br>
Duel HTML and JavaScript File,
\n<br> can be opened in browser and
\n<br> included as a script, since JavaScript
\n<br>doesn't recognize HTML tags in comments,
\n<br> and JS comments don't affect HTML
<script>
if(!window.dataURLified) {
window.dataURLified = function(d) {
window._fileData_${id} = d;
//to access from console for later use
var m = document.getElementById("${id}")
if(!m) return;
m.innerHTML = "<h1>Your file data!</h1>"+
"<br><h2>"+d.name+"</h2><br>"+
"<a href='" + d.url +
"' target='_blank'>View your file [or right click to download]</a>"
}
}
</`+`script>
<div id="${id}"></div>
<style>
</style>
*/
//<script>
dataURLified({name:"` +
filePicker.files[0].name + `", url: "`+
fr.result
+`"})
// </`+`script>
`
], {type:"text/html"}))
kinTayner.appendChild(a)
}
fr.readAsDataURL(filePicker.files[0])
}
</script>
Then in your main code you can read it by including a script with that name [even if the extension is .html] and define a global function dataURLified [or whatever] to handle the data, here's an example file code [to be used after the above file is generated, and placed in the same directory as the following code, or hosted online, and in the input box enter the URL of that file and open the console]:
<h2>BH</h2><br>
<h3>HTML Fileized Loader</h3>
<input id="loader"> -- enter the name of the file you want to load as script [that was generated b4]
<script>
var files = []
function loadSc(name) {
return new Promise((r,j) => {
var sc = document.createElement("script")
sc.onload=()=>{
r({msg:"Loaded",fl:files[files.length-1]})
}
sc.onerror=(e)=>{
j({msg:"Nope",details:e})
}
sc.src=name;
document.body.appendChild(sc)
})
}
function dataURLified(d) {
//use it here
files.push(d)
}
///somewhere in code, can just call loadSc, just an example
loader.onchange = () => {
loadSc(loader.value)
.then(r=> {
console.log(myFile=r.fl,r.msg,"Use myFile.url for the path!")
}).catch(e=>{
console.log("PRoblem!",e)
})
}
</script>

in js, why is my filereader unable to track my inputfile when I edited it

Maybe naive question but I'm wondering this:
I have an html input allowing me to find a local file on my computer. <input type="file" id="importFile">
From this input, i create a FileReader in js to display the text file content on my page
var search_file = document.getElementById("search_file")
search_file.addEventListener('change', function(){
var reader = new FileReader();
var tmp = [];
reader.readAsText(file_to_survey);
reader.onload = function(e) {
var contents = e.target.result;
//function to edit html thanks to content//
}, false);
This part is actually working well BUT if I edit or replace the file I targeted (with exact same file name), I'm not able to display the file without to search it again with the html input mentionned above.
Is there a way to keep trace of my file even after edition?
Many thanks for your help. I dug quiet a lot to solve my problem but maybe I'm thinking the wrong way. Any clue would be nice.

Because that's how the input type=file element works, and to my best knowledge there is no way for you to force the browser to automatically re-read a file from the user's hard drive without their express consent.

You can put the change handler of the file input in a separate function, and call that function when needed.
function loadFile () {
var reader = new FileReader();
reader.addEventListener('load', function () {
file = reader.result;
// Handle the changes here
console.log(file);
});
reader.readAsText(fileField.files[0]);
}
const fileField = document.getElementById('load'),
reloadBut = document.getElementById('reload');
let file;
reloadBut.addEventListener('click', loadFile);
fileField.addEventListener('change', loadFile);
<input type="file" id="load">
<button id="reload">Load</button>
A separate button is used to reload the file in this snippet, but you can call loadFile where ever you need, ex. in an interval or from some event handler knowing the file was changed etc.
Note: This works in Chrome only, other browsers seem to lose the reference to the file browsed into file input when the file is changed. Also, the file must be properly closed after saving, before reloading.

Javascript dynamically show local file

I have a local text file which is kept changing by other programs. I want to write a html and javascript based web page to show the content of file dynamically. I have searched in google and found that most solutions require to get this text file via html element. I wonder if there is a way to get the file via a fixed path(lets say it is a string of the file directory) in javascript. I am using Javascript fileReader. Any help will be appreciated.

This is not possible using javascript running inside the browser. You will not be able to do anything outside the browser.
EDIT:
You could run a Node.js server though that runs on localhost and does your file operations you desire. You could build a API so your html page that you load in the browser calls your serverscript to do your file operations.
Do you understand what I mean?

How much information does the text file hold, Depending on your scenario it might be worth looking into javascript localstorage W3SCHOOLS local storage. Would that help your situation ?

What you can do is allow the user to choose the file of interest, using a file-input. Once done, the browser wil have access to the file, even though the JS wont have access to the file's full-path.
Once the user has chosen the file, you can reload it and refresh the view pretty-much as often as you please.
Here's a short demo, using a file input (<input type='file'/>) and an iframe. You can pick pretty much anything the browser will normally display, though there are limits on the size of the file that will work - due to the limit of the length of a URL - the file's data is turned into a data-url and that url is set as the source of the iframe.
As a demo, pick a file and then load it. Now, open the file in another program and change it. Finally, press the load button once again - the new content now fills the iframe. You can trigger the loading of the file by a timer or any other event in the page. As far as I'm aware, you cannot re-load it when it changes, since there's no notification from the OS - you have to use a button, timer, element event or whatever. Basically, you have to poll for changes.
<!DOCTYPE html>
<html>
<head>
<script>
function byId(e){return document.getElementById(e);}
window.addEventListener('load', onDocLoaded, false);
function onDocLoaded()
{
// uncomment this line for on-demand loading.
byId('loadBtn').addEventListener('click', onLoadBtnClick, false);
}
// fileVar is an object as returned by <input type='file'>
// tgtElem is an <iframe> or <img> element - can be on/off screen (doesn't need to be added to the DOM)
function loadFromFile(fileVar, tgtElem)
{
var fileReader = new FileReader();
fileReader.onload = onFileLoaded;
fileReader.readAsBinaryString(fileVar);
function onFileLoaded(fileLoadedEvent)
{
var result,data;
data = fileLoadedEvent.target.result;
result = "data:";
result += fileVar.type;
result += ";base64,";
result += btoa(data);
tgtElem.src = result;
}
}
function onLoadBtnClick(evt)
{
var fileInput = byId('mFileInput');
if (fileInput.files.length != 0)
{
var tgtElem = byId('tgt');
var curFile = fileInput.files[0];
loadFromFile(curFile, tgtElem);
}
}
</script>
<style>
</style>
</head>
<body>
<button id='loadBtn'>Load</button><input id='mFileInput' type='file'/><br>
<iframe id='tgt'></iframe>
</body>
</html>

you can use nodejs to watch for a filechange using watchfile module, if you just want to watch the filechange and its content. you can run following code using node, but it only consoles the file changed in your terminal.
var fs=require('fs');
fs.watchFile('message.text', function (curr, prev) { //listens to file change
fs.readFile('message.text', function(err,data){ //reads the file
console.log(data.toString()); //consoles the file content
});
});

How to upload a local text file to a textarea (inside the webpage)

I am a novice programmer, and need some help figuring out how to upload a local text file to a textarea inside a website I'm building. I am very fluent in HTML/CSS, I have a decent knowledge of Javascript/JQuery, and I am just learning PHP. Any help you can give I would greatly appreciate. I have an input with type="file" and name="file" and I have a textarea with a class of ".textbox", and I have a button that runs the function "Upload()" Here is the javascript for my site.
var localfile = $("input[name=textfile]").val();
function Upload(){
$(".textbox").append(file);
}
Thanks in advance!

Modern browsers implementing FileReader can do this. To test your browser check if window.FileReader is defined.
Here is some code I wrote a few days ago to do just this. In my case I simply drag a file onto the HTML element which is here referenced as panel.in1 but you can also use (see the reference below).
if (window.FileReader) {
function dragEvent (ev) {
ev.stopPropagation ();
ev.preventDefault ();
if (ev.type == 'drop') {
var reader = new FileReader ();
reader.onloadend = function (ev) { panel.in1.value += this.result; };
reader.readAsText (ev.dataTransfer.files[0]);
}
}
panel.in1.addEventListener ('dragenter', dragEvent, false);
panel.in1.addEventListener ('dragover', dragEvent, false);
panel.in1.addEventListener ('drop', dragEvent, false);
}
It is the reader.onloadend function which gets the text of the file which you recover in the event handler as this.result.
I got most of the mechanism on how to do this from MDN : https://developer.mozilla.org/en-US/docs/Using_files_from_web_applications
This code shows the basics of reading the file, the file itself is dragged into the text area, a nicer interface, I think, than having to go through the select file mechanisms, but those work equally well to select the file to read.
This is my answer to the similar question : Get text file content using javascript

I think it will be good to
upload the file using iframe which gives you a ajax like user experience is what Gmail doing,
and then read the contents of the file using php
then send the contents back through ajax then append to textarea using js.
Does this makes sense?

Save File From Local Data in Javascript

Heres the scenario:
User comes to my website and opens a webpage with some javascript functionality.
User edits the data through javascript
User clicks on a save button to save the data, thing is, it seems like they shouldn't need to download this data because its already in javascript on the local machine.
Is it possible to save data from javascript (executing from a foreign webpage) without downloading a file from the server?
Any help would be much appreciated!

For saving data on the client-side, without any server interaction, the best I've seen is Downloadify, is a small JavaScript + Flash library allows you to generate and save files on the fly, directly in the browser...
Check this demo.

I came across this scenario when I wanted to initiate a download without using a server. I wrote this jQuery plugin that wraps up the content of a textarea/div in a Blob, then initiates a download of the Blob. Allows you to specify both file name and type..
jQuery.fn.downld = function (ops) {
this.each(function () {
var _ops = ops || {},
file_name = _ops.name || "downld_file",
file_type = _ops.type || "txt",
file_content = $(this).val() || $(this).html();
var _file = new Blob([file_content],{type:'application/octet-stream'});
window.URL = window.URL || window.webkitURL;
var a = document.createElement('a');
a.href = window.URL.createObjectURL(_file);
a.download = file_name+"."+file_type;
document.body.appendChild(a);
a.click(); $('a').last().remove();
});
}
Default Use : $("#element").downld();
Options : $("#element").downld({ name:"some_file_name", type:"html" });
Codepen example http://codepen.io/anon/pen/cAqzE

JavaScript is run in a sandboxed environment, meaning it only has access to specific browser resources. Specifically, it doesn't have access to the filesystem, or dynamic resources from other domains (web pages, javascript etc). Well, there are other things (I/O, devices), but you get the point.
You will need to post the data to the server which can invoke a file download, or use another technology such as flash, java applets, or silverlight. (i'm not sure about the support for this in the last 2, and I also wouldn't recommend using them, depends what it's for...)

The solution to download local/client-side contents via javascript is not straight forward. I have implemented one solution using smartclient-html-jsp.
Here is the solution:
I am in the project build on SmartClient. We need to download/export data of a grid
(table like structure).
We were using RESTish web services to serve the data from Server side. So I could not hit the url two times; one for grid and second time for export/transform the data to download.
What I did is made two JSPs namely: blank.jsp and export.jsp.
blank.jsp is literally blank, now I need to export the grid data
that I already have on client side.
Now when ever user asks to export the grid data, I do below:
a. Open a new window with url blank.jsp
b. using document.write I create a form in it with one field name text in it and set data to export inside it.
c. Now POST that form to export.jsp of same heirarchy.
d. Contents of export.jsp I am pasting below are self explanatory.
// code start
<%# page import="java.util.*,java.io.*,java.util.Enumeration"%>
<%
response.setContentType ("text/csv");
//set the header and also the Name by which user will be prompted to save
response.setHeader ("Content-Disposition", "attachment;filename=\"data.csv\"");
String contents = request.getParameter ("text");
if (!(contents!= null && contents!=""))
contents = "No data";
else
contents = contents.replaceAll ("NEW_LINE", "\n");
//Open an input stream to the file and post the file contents thru the
//servlet output stream to the client m/c
InputStream in = new ByteArrayInputStream(contents.getBytes ());
ServletOutputStream outs = response.getOutputStream();
int bit = 256;
int i = 0;
try {
while ((bit) >= 0) {
bit = in.read();
outs.write(bit);
}
//System.out.println("" +bit);
} catch (IOException ioe) {
ioe.printStackTrace(System.out);
}
outs.flush();
outs.close();
in.close();
%>
<HTML>
<HEAD>
</HEAD>
<BODY>
<script type="text/javascript">
try {window.close ();} catch (e) {alert (e);}
</script>
</BODY>
</HTML>
// code end
This code is tested and deployed/working in production environment, also this is cross-browser functionality.
Thanks
Shailendra

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