test1test2
<p id="pid"><i>test1</i><b>test2</b></p> <form> <input type = "button" value = "document.getElementsByTagName('i').item(0).parentNode.nodeName" onclick = " poj = document.getElementById('pid') ioj = poj.firstChild //←<i> boj = ioj.nextSibling //←<b> alert( boj.nodeName ) "> </form>