已采纳回答 / _寒影
获取变量的用法错啦~var getUl = document.getElementById("ul1");var getLi = getUl.getElementsByTagName("li");var getDiv = wrap.getElementsByTagName("div");
2015-07-02
已采纳回答 / michaelxiang
mylist.parentNode.parentNode.parentNode : id="tcon"开始找 -> ul -> id="lesson1" -> id="con"lastChild ： 在<ul id="con"> 里找最后一个子节点；
2015-07-02
function replaceMessage(){
var oldnode = document.getElementById('oldnode');
var newnode = document.createElement('i');
newnode.innerHTML = 'JavaSrcipt';
oldnode.parentNode.replaceChild(newnode,oldnode);
}
var oldnode = document.getElementById('oldnode');
var newnode = document.createElement('i');
newnode.innerHTML = 'JavaSrcipt';
oldnode.parentNode.replaceChild(newnode,oldnode);
}
2015-07-02
<h2>操作成功</h2>
<span id="second">5</span><span>秒后回到主页</span>&nbsp;<input type="button" value="back" onclick="goback()">
<span id="second">5</span><span>秒后回到主页</span>&nbsp;<input type="button" value="back" onclick="goback()">
function sec(){
var time=parseInt(document.getElementById("second").innerHTML);
if(time>0){
time-=1;
document.getElementById("second").innerHTML=time;
}else{clearInterval(s);window.location="http://www.baidu.com";}
}
var s = setInterval(sec,1000);
function goback(){window.history.back();}
var time=parseInt(document.getElementById("second").innerHTML);
if(time>0){
time-=1;
document.getElementById("second").innerHTML=time;
}else{clearInterval(s);window.location="http://www.baidu.com";}
}
var s = setInterval(sec,1000);
function goback(){window.history.back();}
var otest = document.getElementById("test");
var node = document.getElementsByTagName('li');
var newnode = document.createElement('li');
newnode.innerHTML = 'This is a new P';
otest.insertBefore(newnode,node[0]);
var node = document.getElementsByTagName('li');
var newnode = document.createElement('li');
newnode.innerHTML = 'This is a new P';
otest.insertBefore(newnode,node[0]);
2015-07-02
<script type="text/javascript">
function replaceMessage(){
var newnode = document.createElement("i");
var oldNodes = document.getElementById("oldnode");
newnode.innerHTML = oldnode.innerHTML;
oldNodes.parentNode.replaceChild(newnode,oldNodes);
}
function replaceMessage(){
var newnode = document.createElement("i");
var oldNodes = document.getElementById("oldnode");
newnode.innerHTML = oldnode.innerHTML;
oldNodes.parentNode.replaceChild(newnode,oldNodes);
}
2015-07-02
var content=document.getElementById("content");
// 在此完成该函数
for(var i=0;i<content.childNodes.length;i++){
content.removeChild(content.childNodes[i]);
}
// 在此完成该函数
for(var i=0;i<content.childNodes.length;i++){
content.removeChild(content.childNodes[i]);
}
2015-07-02