解决了删除过程中链的长度减小带来的输出不完整问题
function clearText() {
var content=document.getElementById("content");
var arr = content.childNodes;
while(arr.length!=0){
var a = content.removeChild(arr[0]);
document.write("清除节点的内容"+a.innerHTML+"<br>");
}
}
var otest = document.getElementById("test"); var x = document.createElement("li");
var node = otest.firstChild.nextSibling;
x.innerHTML="php";
otest.insertBefore(x,node);
function checkone(){
var j=document.getElementById("wb").value;
var hobby = document.getElementsByName("hobby");
// 任务3
for(var i=0;i<hobby.length;i++){
if(hobby[i].id=="hobby"+j)
hobby[i].checked=true;
}
