JSFiddle - React, Tailwind, and code Playground

by Flexmonster Pivot Table

HTML

<script src="https://cdn.flexmonster.com/flexmonster.js"></script>

<div id="pivot-container"></div>

JavaScript

var pivot = new Flexmonster({
  container: "pivot-container",
  componentFolder: "https://cdn.flexmonster.com/",
  toolbar: true,
  report: {
    options: {
      grid: {
        //Dragging is disabled
        dragging : false
      }
    },
    dataSource: {
      type: "csv",
      filename: "https://cdn.flexmonster.com/data/data.csv"
    }
  }
});

document.body.addEventListener("mouseup", function(e) {
  let colsList = document.querySelector("#fm-pivot-view > div.fm-ui-element.fm-ui.fm-fields-view-wrap.fm-fields-opened > div > div.fm-ui-element.fm-ui.fm-popup-content > div.fm-ui-element.fm-ui.fm-ui-row > div:nth-child(3) > div.fm-ui-element.fm-ui.fm-list-wrap.fm-list-wrap-columns > div.fm-ui-element.fm-ui.fm-list-content > ul");
  if (colsList !== null && colsList.getElementsByTagName('li')[0].innerText !== "Values") {
    let applyBtn = document.querySelector('#fm-pivot-view > div.fm-ui-element.fm-ui.fm-fields-view-wrap.fm-fields-opened > div > div.fm-ui-element.fm-ui.fm-popup-header.fm-ui-row > div.fm-ui-element.fm-ui.fm-ui-col.fm-vam.fm-tar.fm-ui-btns-row > button.fm-ui-element.fm-ui.fm-ui-btn.fm-ui-btn-dark');
    applyBtn.classList.add("fm-ui-disabled");
  }

})