filereader Questions
2
Solved
I have a problem using the Javascript FileRead trying to read huge files.
For example, I have a text file of 200mb and everytime I read this file the code stops working.
Its possible to read the ...
Muhammadan asked 4/7, 2013 at 14:2
7
Solved
I would like to know the specific difference between BufferedReader and FileReader.
I do know that BufferedReader is much more efficient as opposed to FileReader, but can someone please explain why...
Calculable asked 10/3, 2012 at 17:58
5
How to convert blob to base64/image?
I am getting this blob through API call and I am trying to display it in a
image. I have tried with stackoverflow answers but nothing could help so
I just tr...
Anaxagoras asked 25/6, 2018 at 8:47
5
I am trying to access the first few lines of text files using the FileApi in JavaScript.
In order to do so, I slice an arbitrary number of bytes from the beginning of the file and hand the blob ove...
Catchment asked 17/2, 2021 at 15:19
4
Solved
I have registration for in React where I need to upload files to the server. Those files needs to be Base64 encoded.
The function to encode it is as follows:
getBase64(file) {
let document = "";...
Vastha asked 8/11, 2017 at 9:43
9
Solved
Please look through code below:
// A.class
File file = new File("blah.txt");
FileWriter fileWriter = new FileWriter(file);
PrintWriter printWriter = new PrintWriter(fileWriter);
// B.class
File ...
Lacedaemon asked 17/11, 2009 at 6:52
5
Solved
I want to fetch images from s3 and display them on my HTML page.
Angular HTML file:
<section data-ng-controller="myCtrl">
<img ng-src="{{src}}" width="200px" height="200px">
</sec...
Kidskin asked 21/9, 2015 at 18:43
3
when i trying to read file using FileReader and the file size is 5.9gb and when this code run
var file = document.getElementById('uploadFileId').files[0];
let reader = new FileReader();
reader.on...
Raw asked 12/8, 2020 at 12:10
17
Solved
I am able to read Excel file via FileReader but it outputs text as well as weird characters with it. I need to read xls file row-wise, read data in every column and convert it to JSON.
How to rea...
Vacuous asked 23/11, 2011 at 7:8
2
Solved
Want to simlpy read user-input files as text.
Can rely on modern browser usage, so I use FileReader for that (which works like a charm).
reader.readAsText(myfile, encoding);
I know that encodin...
Haynes asked 24/11, 2016 at 15:29
6
I have sth like drawing app. User can save projects and then load them. When I load first time one file (for e.g. project1.leds) make some changes in the app but no saving it and then again load sa...
Abecedarian asked 29/10, 2014 at 15:39
3
I'm trying to use ExcelJS in Vue and I need FileReader to read and parse the files but I'm getting errors. How do I use FileReader with VueJS?
Input Form
<input type="file"
id="...
Remark asked 29/1, 2018 at 3:39
5
I try to convert a file that i get through an input file into a byte[].
I tried with a FileReader, but i must miss something :
var bytes = [];
var reader = new FileReader();
reader.onload = functi...
Kristikristian asked 10/5, 2016 at 9:29
8
Solved
I would like to read a file and convert it into a base64 encoded string using the FileReader object. Here's the code I use :
var reader = new FileReader();
reader.onloadend = function(evt) {
...
Sunroom asked 12/6, 2013 at 14:51
6
I have long file I need to parse. Because it's very long I need to do it chunk by chunk. I tried this:
function parseFile(file){
var chunkSize = 2000;
var fileSize = (file.size - 1);
var foo =...
Wish asked 21/1, 2013 at 12:2
3
I am using this package: https://www.npmjs.com/package/xlsx
However I can have some very large excel files that could contain 1 million rows.
I tested with 600K rows which is about 15mb excel fil...
Chigger asked 26/7, 2018 at 21:21
7
Solved
I'm using the Javascript FileReader to load an image in the browser:
e = e.originalEvent;
e.dataTransfer.dropEffect = 'copy';
this.documentFile = e.dataTransfer.files[0];
var reader = new FileRea...
Tanana asked 16/6, 2014 at 13:38
3
Solved
I have a typed array full of binary data that is being generated from an ArrayBuffer
var myArr = new Uint8Array(myBuffer);
I am presenting this to the user with
var blob = new Blob(myArr, {typ...
Trough asked 2/5, 2016 at 14:52
3
Solved
I'm trying to load a csv file into AngularJS so I can do some manipulation on the contents. It is not quite working as I want it to. To test if it is loading properly, I am loading it into a textar...
Clydesdale asked 2/10, 2014 at 17:9
8
I have the following HTML Code:
<input type='file' multiple>
And Here's my JS Code:
var inputFiles = document.getElementsByTagName("input")[0];
inputFiles.onchange = function(){
var fr =...
Balloon asked 28/12, 2015 at 14:58
5
I am new to javascript and I am currently having problem with one of my projects which includes viewing of an image from the root folder of the website. Here is my current code:
var reader = new ...
Arellano asked 28/2, 2017 at 1:42
3
Solved
I'm new to d3.js so I know this might seem as a silly question to some so please bear with me. I'm trying to parse a csv file which a user uploads and print it's output in the console. I'm able to ...
Wince asked 18/3, 2016 at 8:21
6
I am using a Java program to read and write an existing .xlsx file(same file) but the file is getting corrupted, and the file size becomes zero bytes which is causing "org.apache.poi.EmptyFileExcep...
Eudora asked 14/12, 2015 at 10:0
3
When reading a file from the input element by the FileReader api it works, but my android device also allows sending files and it seems to send heic files anyway which then results in an empty imag...
Northampton asked 20/7, 2019 at 18:8
4
Solved
Thank you for your attention.
I have created a program which I'm using a Login form and Register form.
Once users register their email and their password will be saved it into submit.txt. Then th...
Justiciable asked 24/11, 2015 at 11:29
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