之前做了一個項目，不能用jquery寫代碼，只能用原生的js寫插入，代碼如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<style>
div {
border:solid 1px #ff0000;
}
</style>
<script >
window.onload = function () {
var vtop = "js插入上面";
var vcenter = "js中插入";
var vbottom = "js插入下面";
var vcurrent = document.getElementById("1");
//上面
var newNodeTop = document.createElement("div");
newNodeTop.innerHTML = vtop;
vcurrent.parentNode.insertBefore(newNodeTop, vcurrent);
//中間
var newNodeCenter = document.createElement("div");
newNodeCenter.innerHTML = vcenter;
vcurrent.appendChild(newNodeCenter);
//下面
var newNodeBottom = document.createElement("div");
newNodeBottom.innerHTML = vbottom;
vcurrent.parentNode.insertBefore(newNodeBottom, vcurrent.nextSibling)
}
</script>
</head>
<body>
<div id="1">current DIV</div>
</body>
</html>