Looping Typewriter in Cheetah

<!-- loop between a number of sentences in a typewriter style -->

<div id="mysentences"></div>

<style>
    #mysentences {
font-family: Verdana, Geneva, sans-serif;
font-size: 30px;
letter-spacing: 2px;
word-spacing: 2px;
color: #000000;
font-weight: 400;
text-decoration: none;
font-style: normal;
font-variant: normal;
text-transform: none;
}
</style>

<script>
    const jamessentences = [
    "FROM ‘IF’ BY RUDYARD KIPLING (1910)",
    "If you can keep your head when all about you",
    "Are losing theirs and blaming it on you,",
    "If you can trust yourself when all men doubt you,",
    "But make allowance for their doubting too;",
    "If you can wait and not be tired by waiting,",
    "Or being lied about, don’t deal in lies,",
    "Or being hated, don’t give way to hating,",
    "And yet don’t look too good, nor talk too wise:",
    ];
    const jamesspeed = 100; // time in milliseconds between each letter
    const jamespause = 2000; // time in milliseconds to pause
    const jamesloop = 0; // number of times to display sentences (0 = infinite)

    typeWriter(0,jamessentences,0,jamesspeed,jamespause,jamesloop);

  function typeWriter(i,txt,texti,speed,pause,loop) {
    if (i==0) document.getElementById('mysentences').innerHTML = '';

    if (i < txt[texti].length) {
        document.getElementById('mysentences').innerHTML += txt[texti].charAt(i);
        i++;
        setTimeout(function() {
            typeWriter(i,txt,texti,speed,pause,loop);
        }, speed);
    } else {
        i = 0;
        texti++;
        if (texti == txt.length) {
            loop--;
            if (loop == 0) return;
            texti = 0;
        }
        setTimeout(function() {
            cleanUpTypeWriter(i,txt,texti,speed,pause,loop);
        }, pause);
    }
  }

  function cleanUpTypeWriter(i,txt,texti,speed,pause,loop) {
    if (document.getElementById('mysentences').innerHTML == '') {
        typeWriter(i,txt,texti,speed,pause,loop);
    } else {
        document.getElementById('mysentences').innerHTML = document.getElementById('mysentences').innerHTML.slice(0, -1);
        setTimeout(function() {
            cleanUpTypeWriter(i,txt,texti,speed,pause,loop);
        }, speed/10);
    }
  }
</script>