在日常网站建设中会因为网站程序的要求用到动态添加及删除DIV层，今天就为大家介绍关于js动态创建及移除div的方法,涉及javascript针对页面元素的动态操作技巧,需要的朋友可以参考下：

//创建div 
function createDiv(){
  if(document.getElementByIdx_x("newD")!=null)
   document.body.removeChild(document.getElementByIdx_x("newD"));
  var Div = document.create_rElement("div");
//创建div
  Div.setAttribute("id", "newD");
  Div.style.position = "absolute";
  Div.style.height = "160px";
  Div.style.width = "400px";
  Div.style.border = "1px solid grey";
  Div.style.background = "white";
  Div.style.paddingTop = "40px";
  Div.style.zIndex = "100";
  Div.style.left = 100 +"px";//注意Firefox下必须加"px"
  Div.style.top = 100 +"px"; 
 Div.style.textAlign = "center";
  Div.style.fontSize = "18px";
  var str = "<div id=\"divClose\" onclick=\"removeDiv()\" style=\"width:16px;height:16px;
float:right;margin-top:-40px;background:url(images/divClose.gif);\"><\/div>";
  Div.innerHTML = str + title; 
 document.body.appendChild(newD); 
} 
//移除创建的div 
function removeDiv(){
  document.body.removeChild(document.getElementByIdx_x_x("newD")); 
}