<script type="text/javascript">
function replaceMessage(){
var newnode =document.createElement("i");
var oldnode =document.getElementById("oldnode");
var oldnodetext=oldnode.innerText;
var newnodetext =document.createTextNode(oldnodetext);
newnode.appendChild(newnodetext);
for(const e of oldnode.attributes){
if(e.name=="id"){
newnode.setAttribute(e.name,"newnode");
continue;
}
newnode.setAttribute(e.name,e.value);
}
oldnode.parentNode.replaceChild(newnode,oldnode);
}
</script>加油啊