JSFiddle - React, Tailwind, and code Playground

HTML

<div id="res">

</div>

JavaScript

$(function() {
  test = [];
  test[0] = "EQUAL CONTAINS EQUAL LESS_THAN"; //=> NOT OK
  test[1] = "EQUAL EQUAL EQUAL"; // => OK
  test[2] = "EQUAL"; // => OK
  test[3] = "CONTAINS"; // => NOT OK
  test[4] = "CONTAINS EQUAL"; // => NOT OK
  test[5] = "EQUAL EQUAL EQUAL CONTAINS"; //=> NOT OK

  tl = test.length
  reg = /EQUAL\s?/;
  out = ""
  for (i = 0; i < tl; i++) {
    temp = test[i].split(reg)
    out+=test[i]+" => "+((temp.join('').length==0)?"OK":"NOT OK") + "<br/>"

  }

  $("#res").html(out);

})