danfo.readJSON
Reads a JSON file into DataFrame.
danfo.readJSON(source, options)
Parameters
Type
Description
Default
source
Input file object, string file** **path or URL
Any valid string path is acceptable. The string could be a URL. Valid URL schemes include http, https, ftp, s3, gs, or a local path. Both relative and absolute paths are supported
An input file object is also supported in the browser.
options
Object
Configuration options for reading JSON files. Supported options:
{
method: The HTTP method to use.headers: Additional headers to send with the request if reading JSON from remote url. Supports all the node-fetch options in Nodejs, and all fetch options in browsers.}
{
method: "GET"
}
The readJSON method can read JSON files from a local disk, over the internet, or directly from input file objects.
Reading JSON files from local disk
Node.js
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const dfd = require("danfojs-node")
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dfd.readJSON("./user_names.json")
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.then(df => {
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df.head().print()
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}).catch(err=>{
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console.log(err);
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})
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Reading JSON files from a URL
By specifying a valid URL, you can load JSON files from any location:
Node.js
Browser
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const dfd = require("danfojs-node")
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dfd.readJSON("https://raw.githubusercontentdatasets/master/finance-charts-apple.json")
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.then(df => {
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df.head().print()
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}).catch(err=>{
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console.log(err);
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})
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/lib/bundle.min.js"></script>
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<title>Document</title>
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</head>
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<body>
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<script>
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dfd.readJSON("https://raw.githubusercontentdatasets/master/finance-charts-apple.json")
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.then(df => {
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df.head().print()
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}).catch(err=>{
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console.log(err);
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})
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</script>
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</body>
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</html>
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Reading an input file object in the browser
Browser
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/lib/bundle.min.js"></script>
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<title>Document</title>
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</head>
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<body>
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<input type="file" id="file" name="file">
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<script>
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inputFile.addEventListener("change", async () => {
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const jsonFile = inputFile.files[0]
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dfd.readJSON(jsonFile).then((df) => {
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df.print()
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})
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})
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</script>
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</body>
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</html>
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Last modified 1mo ago