<div id="content">

<h1>html</h1>

<h2>php</h2>

<h3>javascript</h3>

<h4>jquery</h4>

<h5>java</h5>

</div>

<script type="text/javascript">

function clearText(){

var content=document.getElementById("content");

var cnode = content.childNodes;

for(var i = 0; i < cnode.length; i++){

/*document.write( cnode[i].nodeName + "a" + "<br />");

document.write( cnode[i].nodeType + "b" + "<br />");

document.write( cnode[i].nodeValue + "c" + "<br />");*/

    content.removeChild(cnode[i]);

}

}

</script>

<button onclick="clearText()">清除节点内容</button>

为什么要点击两次按钮才能删除#content中的几个元素?是浏览器节点bug问题吗