SOURCE

window.onload = function() {
  var oDemo = document.querySelector('#demo');
  //alert(oDemo)
  var arr = ["一", "二", "三", "四", "五", "六", "七", "八", "九", "十"];       
  //var arr = [1,2,3,4,5,6,7,8,9]
  var htmlString = [];
  htmlString.push("<ul class='list'>");
  for(var i = 0;i<arr.length;i++){
    item = arr[i]
    htmlString.push("<li>"+item+"</li>")
  }
  htmlString.push("</ul>")
  htmlString = htmlString.join('');
  oDemo.innerHTML = htmlString;
}

<div class="demo" id="demo">
</div>

ul,
li {
  margin:0;
  padding:0;
  list-style: none;
  color:red
}
li{
  border-bottom:1px solid #000;
  height:50px;
  line-height:50px
}