Read_local_fle

Read_local_fle.js

document.getElementById('read').addEventListener('click',file=>{   
   readFile(document.getElementById('file'))
 }) 

   function readFile(input) {
        console.log(input)
        let file = input.files[0];
        let reader = new FileReader();
        let readerText = new FileReader();

        reader.readAsArrayBuffer(file);
        readerText.readAsText(file); // is text 
     
        reader.onload = function() {          
            var resultUtf8is1251 = new TextDecoder('windows-1251').decode(reader.result);
            var json = csvJSON(resultUtf8is1251);
           document.querySelector('.result').textContent = json
          console.log(json)
  
        };
     
        // readerText.onload = function() {
        //     var result = readerText.result         
        //     document.querySelector('.result').textContent  = result
        // };
     
        reader.onerror = function() {
            console.log(reader.error);
        };

     }

function csvJSON(csv){
  var deliminer = ";";// deliminer
  var lines=csv.split("\n"); 

  var result = [];
  
  var headers=lines[0].split(deliminer);

  for(var i=1;i<lines.length;i++){

      var obj = {};
      var currentline=lines[i].split(deliminer);

      for(var j=0;j<headers.length;j++){
          obj[headers[j]] = currentline[j];
      }

      result.push(obj);

  }

 // return result; //JavaScript object
  return JSON.stringify(result); //JSON
}