count IR total among NFL current injuries list

ambulance.js

// Pro Football Reference | Current NFL Injuries
// https://www.pro-football-reference.com/players/injuries.htm

var elements = document.getElementById("div_injuries");
var injuries = elements.querySelectorAll("td[data-stat='injury_class']");

var seasonEnding = Array.prototype.slice.call(classes).filter(el => el.textContent == "I-R");

console.log(injuries.length);
console.log(seasonEnding.length);