大佬们,哪里错了啊,运行不了
<!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>我们互动下</title>
<script>
function a(){
var a = confirm("确定进入JS进阶篇?");
if(a==true){
document.write("恭喜您进入年薪百万的行业!");
}else{
document.alert("恭喜您拥有一头乌黑亮发");
}
}
</script>
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<button id = "btn" onclick = "a()">点击进入</button>
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