错哪了呢，求解啊,这样不行的吗
<script type="text/javascript">
function replaceMessage(){
var oldnode = document.getElementsTagName("b");
var newnode = document.creatElement("i");
oldnode.replaceChild(newnode,oldnode);
}
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<script type="text/javascript">
function replaceMessage(){
var oldnode = document.getElementsTagName("b");
var newnode = document.creatElement("i");
oldnode.replaceChild(newnode,oldnode);
}
2017-03-23
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