<body>
??<div><b?id="oldnode">JavaScript</b>是一個很常用的技術，為網頁添加動態效果。</div>
??<a?href="javascript:replaceMessage()"?onClick="replaceMessage()">?將加粗改為斜體</a>
??
????<script?type="text/javascript">
??????function?replaceMessage(){
??????
????????var?ohtml?=?document.getElementById("oldnode").innerHTML;
????????var?oldNode?=document.getElementById("oldnode");
????????var?newNode?=?document.createElement("i");
????????newNode.innerHTML?=?ohtml;
??????
????????oldNode.parentNode.replaceChild("newNode,oldNode")
??????
???????}????
??</script>
??
?</body>
2018-08-04
replaceChild();里面的內容不用加引號