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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>登陆页面</title>
<script type="text/javascript">
window.onload=function()
{
var btnAdd=document.getElementById("add");
var btnDel=document.getElementById("del");
var objWraper=document.getElementById("wrapper");
btnAdd.onclick=function(){
var objInput=document.createElement("input");
objInput.type="text";
objWraper.appendChild(objInput);
}
btnDel.onclick=function(){
var arrInputs=objWraper.getElementsByTagName("input");
if(!arrInputs.length){
alert("已经没有要删除的数组了,亲~");return;
}
objWraper.removeChild(arrInputs[arrInputs.length-1]);
}
}
</script>
</head>
<body>
<input type="button" value="+" id="add" />
<input type="button" value="-" id="del"/>
<div id="wrapper">
<input type="text" />
</div>
</body>
</html>