<script type="text/javascript">
function replaceMessage(){
var oldnode=document.getElementById("oldnode");
var newnode=document.createElement("i");
var oldtext=olenode.innerHTML;
newnode.appendChild(oldtext);
oldnode.parentNode.replaceChild(newnode,oldnode)
}
</script>
应该改成 newnode.appendChild(document.createTextNode(oldtext));
谢谢大家 结问了0.0