我想动态地添加ID =“prnt”的DIV下的儿童DIV。节点的添加工作正常没有问题。然而,对于被删除的节点来说,这足够奇怪了,它只能删除包含0的偶数节点。为什么这样呢,我可能是一些愚蠢的东西,但它看起来更像是一个错误。我可能是非常错误的。Javascript .removeChild()只会删除偶数节点?
<script type="text/javascript">
function displayNodes()
{
var prnt = document.getElementById("prnt");
var chlds = prnt.childNodes;
var cont = document.getElementById("content");
for(i = 0; i < chlds.length; i++)
{
if(chlds[i].nodeType == 1)
{
cont.innerHTML +="<br />";
cont.innerHTML +="Node # " + (i+1);
cont.innerHTML +="<br />";
cont.innerHTML +=chlds[i].nodeName;
cont.innerHTML +="<br />";
}
}
}
function deleteENodes()
{
var prnt = document.getElementById("prnt");
var chlds = prnt.childNodes;
for(i = 0; i < chlds.length; i++)
{
if(!(chlds[i].nodeType == 3))
{
prnt.removeChild(chlds[i]);
}
}
}
function AddENodes()
{
var prnt = document.getElementById("prnt");
//Only even nodes are deletable PROBLEM
for(i = 0; i < 10; i++)
{
var newDIV = document.createElement('div');
newDIV.setAttribute("id", "c"+(i));
var text = document.createTextNode("New Inserted Child "+(i));
newDIV.appendChild(text);
prnt.appendChild(newDIV);
}
}
</script>
<title>Checking Div Nodes</title>
</head>
<body>
<div id="prnt">
Parent 1
</div>
<br />
<br />
<br />
<button type="button" onclick="displayNodes()">Show Node Info</button>
<button type="button" onclick="deleteENodes()">Remove All Element Nodes Under Parent 1</button>
<button type="button" onclick="AddENodes()">Add 5 New DIV Nodes</button>
<div id="content">
</div>
</body>
许多DOM注资方式(的childNodes,的getElementsByTagName等)返回的数组是“活”:他们奇迹般地被更新每当文档更改。这可能会导致一些微妙的错误,比如你正在经历的错误。 – hugomg