Anonymous

<script type="text/javascript">

function kes() {
  var katman  = 'yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns';
  var icerik  = document.getElementById('icerik');
  var uzunluk = katman.length; // uzunluk
  var limit   = 20; // karakter limiti
  var start   = 0;
  var temp    = "";

  for (var i = 0; i <= uzunluk; i++) {
    if(i%limit == 0) { 
      temp =  temp + katman.substring(start,i) + "<br />"
      start = i;
    }
  }
  
  icerik.innerHTML = temp;
}
</script>

<input type="button" onClick="kes()">tik</button><br>

<div id="icerik" class="div">yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns-yns</div>