<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script type="text/javascript">
window.onload = function () {
var oBtn = document.getElementById("btn");
var oTxt = document.getElementById("txt1");
var oUl = document.getElementById("ul1");
oBtn.onclick = function () {
var oLi = document.createElement("li");
var aLi = oUl.getElementsByTagName("li");
oLi.innerHTML = oTxt.value;
if (aLi[0].length > 0) {
//如果之前有元素则插入在前面
oUl.insertBefore(oLi, ali[0]);
}
else {
oUl.appendChild(oLi);
}
}
}
</script>
</head>
<body>
<input type="text" value="" id="txt1" />
<input type="button" value="创建" id="btn" />
<ul id="ul1"></ul>
</body>
</html>
--拓展
Oul.removeChild(this.parentNode);