js:獲取節點相關的 nodeName,nodeType,nodeValue

getElementById()
getElementsByName()
getElementsByTagName()
hasChildNodes()
nodeName
nodeType=1元素節點/2屬性節點/3文本節點
nodeValue

    <script type="text/javascript">
    //取得input元素的名字 nodeName,類型nodeType值nodeValue;
            var inputElement=document.getElementById("tid");
            var nodeName=inputElement.nodeName;
            var nodeType=inputElement.nodeType;
            //元素節點的nodeValue返回的是null
            var nodeValue=inputElement.nodeValue;
            alert(nodeName+":"+nodeType+":"+nodeValue);
            
    //取得input元素屬性名字nodeName,類型nodeType,nodeValue
            var inputElement=document.getElementById("tid");
            var typeAttrElement=inputElement.getAttributeNode("type");
            var nodeName=typeAttrElement.nodeName;
            var nodeType =typeAttrElement.nodeType;
            var nodeValue=typeAttrElement.nodeValue;
            alert(nodeName+":"+nodeType+":"+nodeValue);
    </script>