code: function placeCaret(el, position) {
      var range, sel;
  
      range = document.createRange();
      sel = window.getSelection();
      range.setStart(el.childNodes[0], position);
      range.collapse(true);
      sel.removeAllRanges();
      sel.addRange(range);
  }
docs: Placing caret to element and selected position
  
  @param {Element} el
  @param {integer} position
  @return {void}