function checkone(){
var j=document.getElementById("wb").value;
var hobby = document.getElementsByName("hobby");
if(j>=1&&j<=6){
hobby[j-1].checked = true;
}
// 任务3
var main = document.body;
//创建链接
function createa(url,text)
{
var a = document.createElement("a");
a.href = "url";
a.innerTHML = "text";
a.style.color = red;
main.appendChild(a);
