How to get the value of radio button and check box in js_form effects

// JavaScript Document
function sub1()
{
// Use the Form name to directly reference the form object

//form1.method = "get";

// Use the form name as an attribute of the document object to reference the form object,

// And use user as the attribute of the form object to refer to the text box element object named user

// document.form1.user.value = "lisi"; document.getElementById("s1");
var s2=document.getElementById("s2");
var s3=document.getElementById("s3");
var s4=docu ment.getElementById(" s4 "); var s5 = document.GetelementByid (" s5 ");
S1.Innertext = DOCUMENT.GetelementByid (" Text1 "). Value;
Var obj = sbyname ("Radio" );

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

if(obj[i].checked)
{
s2.innerText =obj[i].value;
}
}
var obj1 = document.getElementsByName("fuxuan");
for(var i = 0; i < obj1.length ; i )
{
if(obj1[i].checked)
{
s3.innerText =obj1[i].value ' ';

}
}
s4.src=document.getElementById("photoFile1").value;
s5.innerText=document.getElementById("ta1").value;
}