danfo.readJSON

Reads a JSON file into DataFrame.

danfo.readJSON(source, options)

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

const dfd = require("danfojs-node")

dfd.readJSON("./user_names.json")
  .then(df => {
  
   df.head().print()

  }).catch(err=>{
     console.log(err);
  })

Reading JSON files from a URL

By specifying a valid URL, you can load JSON files from any location:

const dfd = require("danfojs-node")

dfd.readJSON("https://raw.githubusercontentdatasets/master/finance-charts-apple.json") 
  .then(df => {
  
   df.head().print()

  }).catch(err=>{
     console.log(err);
  })

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <script src="https://cdn.jsdelivr.net/npm/danfojs@1.1.2/lib/bundle.min.js"></script>
    <title>Document</title>
</head>

<body>

    <script>
     
     dfd.readJSON("https://raw.githubusercontentdatasets/master/finance-charts-apple.json") 
       .then(df => {
       
        df.head().print()
     
       }).catch(err=>{
          console.log(err);
       })
         
    </script>
</body>

</html>

Reading an input file object in the browser

By specifying a valid file object, you can load a JSON file in the browser:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <script src="https://cdn.jsdelivr.net/npm/danfojs@1.1.2/lib/bundle.min.js"></script>
    <title>Document</title>
</head>

<body>
    <input type="file" id="file" name="file">
    <script>
            
        inputFile.addEventListener("change", async () => {
            const jsonFile = inputFile.files[0]
            dfd.readJSON(jsonFile).then((df) => {
                df.print()
            })
        })
         
    </script>
</body>

</html>

Previousdanfo.toExcel Nextdanfo.toJSON

Last updated 2 years ago