JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
    <div id="chartContainer" style="height: 300px; width: 100%;">Pie Chart for file_C</div>  
    <form>
      <input id='file_C' type="button" value="file_C" onclick="getParams(this.id)">
    </form>

JavaScript

var files = ['file_A', 'file_B', 'file_C', 'file_D'];
  var contributions = [['jack:2', 'yep:4', 'nah:7', 'woo:2'], ['jack:6', 'yep:1', 'nah:8', 'woo:4'], ['jack:7', 'yep:3', 'nah:4', 'woo:6'], ['jack:4', 'yep:2', 'nah:1', 'woo:7']];
  
  var createChart = function (data, fileName, driveName) {
  var chart = new CanvasJS.Chart("chartContainer", {
    theme: "theme3", //colour/text selection
    title:{
      text: "User %/Actions for " + fileName + " in Drive " + driveName
    }, //title with parameters		
    data: [
      {       
        type: "pie", //type of graph
        showInLegend: true, //legend or no legend
        toolTipContent: "{y} - #percent %", //value and % when hover over segment
        legendText: "{indexLabel}", //names of users
        dataPoints: data //data in the form of contributions : user
      }
    ]
  });
  chart.render();
  }
  
  
  var	driveName = '';
  var  fileName = null;
  var  wantedNames = [];
  var  wantedVals = [];
  var  wantedInfo = [];
  var data = [];
  
  function getParams(clickedID) {
    wantedNames = [];
    wantedVals = [];
    wantedInfo = [];
    driveName = 'test_drive';
    fileName = clickedID;

    for (var i = 0; i < files.length; i++) {
      wantedInfo.push(contributions[i]);
      if (files[i] == clickedID) {
        for (var j = 0; j < contributions[i].length; j++) {
          wantedNames.push(contributions[i][j].split(':')[0]);
          wantedVals.push(contributions[i][j].split(':')[1]);
        }
      }
    }
    create_pie_chart(driveName, fileName, wantedNames, wantedVals);
  }


  function create_pie_chart(drive_name, file_name, users, contributions) {
   	driveName = drive_name; //string taken as paramater
   	fileName = file_name; //string taken as parameter
    usersArr = users; //array of strings taken as parameter
    contributionsArr = contributions; //array of ints taken as parameter
    N = usersArr.length; //length of users &/or contributions array
  	data = [];

    //filling the data...