<input type="hidden" id="totalLandArea" value="<%-info.totalLandArea%>">
<script>
    //获得原数字
     document.getElementById("totalLandArea").value;
    //三位一逗号
     var a = (<%-info.totalLandArea%>).toLocaleString(3)
 　　//赋值
     var b = document.getElementById("area").innerHTML = a
</script>