function showRegister()
3 {
4 var ck = document.getElementById("ckCheck");
5 var btn = document.getElementById("validatemsg");
6 if(ck.checked )
7 {
8 btn.style.display = "block";
9 }
10 else
11 btn.style.display = "none";
12 }
3 {
4 var ck = document.getElementById("ckCheck");
5 var btn = document.getElementById("validatemsg");
6 if(ck.checked )
7 {
8 btn.style.display = "block";
9 }
10 else
11 btn.style.display = "none";
12 }
function showRegister()
{
var ck = document.getElementById("ckCheck");
var btn = document.getElementById("validatemsg");
if(ck.checked )
{
btn.style.display = "block";
}
else
btn.style.display = "none";
}
</script>看原码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>00</title><script>
function change(obj){
var obtn = document.getElementById('btn');
if(!obj.checked)
obtn.style.display="none";
else
obtn.style.display="block";
}</script>
</head><body>
<INPUT TYPE="checkbox" NAME="che" id="check" onclick="change(this)"/> <br>
<INPUT TYPE="button" id="btn" value="aaaa" ></body>
</html>