file reader read blob file
i am trying to use filereader to access a blob file located locally, such as c drive, then converts it back to object URL as img src. it is not working, can anyone help this?never found anyone try to...
View ArticleTypeError: Failed to execute 'readAsText' on 'FileReader': parameter 1 is not...
I'm writing an chrome application with scala.js, and have some file reading problem.When I use chrome.fileSystem.chooseEntry with openDirectory to select a directory, I want to read the _meta_.json...
View ArticleFileReader returns garbage after a certain number of files in mobile safari
Been really stumped by this problem. I've searched the web and haven't found traces of info on it, but I believe it is a widespread issue.See the HTML in this post. If I select more than 350 (the...
View ArticleHow to get a line of text in a ifstream file with another line of text?
I have a txt file that has page number data for 3 books. I am making a program to quickly change that data for a website. Here is my txt file:0 31 572 173The 0,1,2 is the book index's I would like to...
View ArticleTrouble uploading binary files using JavaScript FileReader API
New to javascript, having trouble figuring this out, help!I am trying to use the Javascript FileReader API to read files to upload to a server. So far, it works great for text files. When I try to...
View ArticleHow to display a image selected from input type = file in reactJS
I'm trying to display a image selected from my computer in my web app. I referred the following question which addresses the question i'm trying to fix. How to display selected image without sending...
View ArticleIssue with Previewing Multiple Images After Upload in React
I'm working on a React component that allows users to edit a product and upload images. While I'm able to set and preview a single image correctly, I'm having trouble with previewing multiple images....
View ArticleFailed to execute 'readAsText' on 'FileReader': parameter 1 is not of type...
I am trying to read a user uploaded xml file in angular. Below is my code:Component.ts:convertFileToString(event){ this.uploadXML=event.target.files[0]; let fileReader = new FileReader();...
View ArticleHow to read file without file input?
I'm developing an application in Javascript, which requires to read a text file and put it into a variable as input. However, I google many related questions and found that FileReader can't read file...
View Articlesending audio file to open ai whisper model
I am converting my recorded audio file to a blob object and then reading it with file reader to make a post request to open ai whisper modelIt expects a audio file and model name i.e whisper-1The error...
View Articlejava reading a line of specific length and position from a txt fie
I am trying to create segments of data from a text file to transfer over a network to another device however my reader is not working.It will read the chunk, send it and update the counter value...
View ArticleHow to implement Progress Bar and Callbacks with async nature of the FileReader
I have the FileReader API called within a for loop to iterate through multiple file objects. I'm using FileReader to essentially display preview of images.function() { for (var i in Files) { var...
View ArticleCreating a FileReader which way is better for optimisation?
From an optimization stand point, is it better to declare the File separately like thisFile f = new File("sample.txt");FileReader fr = new FileReader(f);or, is it better to do it inline like...
View ArticleReading CSV File without manupulating encoding
I have a csv file that I can see with :file -bi myCsv.txtthat the character-set is iso-8859-1.Now I want to read this file using JavaScript from input tag and type 'file' without manipulating the...
View ArticleSpecify the type returned from FileReader readAsDataURL() as PNG and not TIFF?
I'm getting an image that has been pasted into the content editable div and during paste the types in listed in the Clipboard include "image/png" and "image/tiff". When I get that image using a...
View ArticleCan't find variable: FileReader in Safari
i uses html5 upload try{ var reader = new FileReader(); reader.onerror = function(e) { }; reader.onload = function(e) { }; reader.readAsText(file); }catch(e){ }but in safai when i upload a .torrent...
View ArticleJavaScript FileReader Slice Performance
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 over to...
View ArticleParse CSV records in to an array of objects in JavaScript
I'm new to JS and not much exp in Regex to play with string manipulation. Here is my CSV file with records in tabular form with the first line as headers and from on next line the values will be...
View ArticleFileReader.readAsArrayBuffer handling of non-ASCII including £ (pound sterling)
I am using FileReader.readAsArrayBuffer(file) and converting the result into a Uint8Array.If the text file input contains a pound sterling sign (£), then this single character results in two byte...
View ArticleJavascript Promises with FileReader()
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 = new...
View ArticleConvert Blob to image url and use in image src to display image
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 tried...
View ArticleHow do I read the first N bytes of a file from an HTML File input?
SituationSay the user may upload a file on a web page, that usually is of a big size (minimum 80 MB, can be way more), and of a specific type, say, for example, PDF.Considering these are huge files, we...
View ArticleUsing pattern matching to sort from a file, Java
So I've gotten my program to the point where it properly separates the lines of the text file properly and can even match the pattern for the first line of text but i also need to be able to detect and...
View ArticleProblem trying to sort images alphabetically by file name that have been...
I am trying to load images into an html document using the file reader API, and then sorting them alphabetically. The code I have written loads the images into the div just fine, however it doesn't...
View ArticleHow to control/record the order FileReader uploads files in?
I've created a basic JSON object as a request to ChatGPT then I loop through a bunch of images selected via an input tag and add them dynamically to the object for it to have a look at the images and...
View ArticleGetting zero after reading a column of integer values from a file
So i have been stuck with this problem for a week now. I need to get the values from the last of column of the file that i am reading. But i when i try to read that array outside the while loop i am...
View ArticleHow to create image file on Google Drive having BinaryString or any of...
I'm passing data to the Google application which published on the web using Post method. Here is the code of the sever side:function doPost(e) { var params, result, responce; if(typeof e !==...
View ArticleFileReader onload with result and parameter
I can't manage to get both the result of the filereader and some parameters in a onload function. This is my code:HTML of control:<input type="file" id="files_input" multiple/>Javascript...
View ArticleiOS 8.1.2 issue opening file [duplicate]
ProblemI have an issue with the iOS.I am working in a web application with a mobile skin full responsive.In the PC version everything works fine, same happening with android. Everything runs without...
View ArticleUsing FileReader with React and Typescript
I want to upload json file using input with type file. When I use onload method on fileReder Typescript shows me error - Cannot invoke an object which is possibly 'null'.Thank you.const UploadCharacter...
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