papaparse

问题 How can I read a local file with Papa Parse? I have a file locally called challanges.csv , but after many tried I can't parse it with Papa Parse. var data; Papa.parse('challanges.csv', { header: true, dynamicTyping: true, complete: function(results) { console.log(results); data = results.data; } }); As far as I know, I'm having problems with opening the csv file as File. How can I do it with javascript? 回答1: The File API suggested by papaparse's docs is meant for browser used. Assuming that

问题 EDIT: [SOLVED] For anyone who reads this, Papa Parse is a parser for the browser, not Node.js. Baby Parse is used for Node.js, but know that it isn't as extensive in its functionality and can't parse straight from a file, only from a string. In the papaparse.js file, it has this line of code: xhr = new XMLHttpRequest(); This seems to be causing the error and I'm not sure how to get around it. My code: var Papa = require('papaparse'); var data; process.argv.forEach(function(val, index, array)

问题 I am trying to load a file that has about 100k in lines and so far the browser has been crashing ( locally ). I looked on the internet and saw Papa Parse seems to handle large files. Now it is reduced down to about 3-4 minutes to load into the textarea. Once the file is loaded, I then want to do some more jQuery to do counts and things so the process is taking awhile. Is there a way to make the csv load faster? Am I using the program correctly? <div id="tabs"> <ul> <li><a href="#tabs-4"

问题 Edit: Trying to use papaparse chunk & custom webworker multithreading now. Edit2: Sorry I could not figure this out, but I am going to render this list of cities through a web scraper on https://www.freemaptools.com/find-cities-and-towns-inside-radius.htm anyway I decided instead of from a csv with papaparse... I am trying to render <WeatherCitySky /> for each city from a csv at a dropbox link parsed by papaparse. Inside componentDidMount the first cors-anywhere/dropbox link, commented out ,

问题 Forewarning, I am new to js and I crafted the code below was taken from Retrieve parsed data from CSV in Javascript object (using Papa Parse) my goal = parse a csv file into an array, and use that array in a few other operations. I can see that the file is getting parsed properly via the "console.log("Row:", row.data);", but I cannot figure out how to get that entire array/dataset into a separate variable, much less into the "doSAtuff" function. function parseData(url, callBack) { Papa.parse

问题 I am trying to use baby parser for parsing csv file but i am getting below output if i give file name file and code are in same directory my code: var Papa = require('babyparse'); var fs = require('fs'); var file = 'test.csv'; Papa.parse(file,{ step: function(row){ console.log("Row: ", row.data); } }); Out put : Row: [ [ 'test.csv' ] ] 回答1: file must be a File object: http://papaparse.com/docs#local-files. In nodejs, you should use the fs API to load the content of the file and then pass it

问题 Can someone point to or show me a working example of Papa Parse reading a csv file. When I try to use : Papa.parse(file, { complete: function(results) { console.log("Finished:", results.data); } }); the file name is returned in the array instead of the data within. None of the internet examples actually work. The official demo works correctl inspecting its code I cant find it making use of the above strangely. 回答1: I have faced the same problem and it was solved by 2 actions: 1- Adding a

问题 My form is this <form name="form-basic" class="form-validation" ng-submit="uploadFile(updFrm.file)"> <input type="file" class="form-control" name="filee" id="files" ng-model="updFrm.file"/> <input type="submit" value="click" class="btn btn-default"> </form> I want to Pass Value of Input "file" into papaParse Papa.parse(fileInput.files[0], { complete: function(results) { console.log(results); } }); Now how to replace fileInput.files[0] with Value from " <input type="file" class="form-control"

问题 I'm using Papa Parse to parse a CSV file for Graphs. I want to store the data in React state after the file is parsed. Papa.Parse() doesn't return anything and results are provided asynchronously to a callback function. Also, setState() doesn't work inside a async callback. This question is similar to Retrieving parsed data from CSV. I tried storing the data in state using below code, but as expected it didn't work. componentWillMount() { function getData(result) { console.log(result); /

问题 I posted a question regarding parsing large csv files Jquery crashes while parsing large csv file. It involves reading a csv file and tablifying it. I tried using the code given in one of the responses but it doesn't work.. Here's my entire code: <!DOCTYPE html> <meta http-equiv="content-type" content="text/html;charset=utf-8" /> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> <script src="PapaParse-4.1.0/papaparse.js"></script> <script src="virtual