育才学习网1.a标签控制层的显示和隐藏怎么
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
function xian(){
document.getElementById('a').style.display = "block";
}
function yin(){
document.getElementById('a').style.display = "none";
}
//-->
</SCRIPT>
<BODY>
<input type="text" id="a"/><br>
<a href="#" onclick="xian()">；显示</a><br>
<a href="#" onclick="yin()">；隐藏</a>
</BODY>
</HTML>
2.css问题：怎样能使a标签在加载时隐藏
<script>
function aHidden(){
var aa = document.getElementsByTagName("a")；//获取所有的a标签
for (var i=0;i<aa.length;i++){
aa[i].style.display="none"；//让a标签隐藏
}
}
window.onload=aHidden；//网页载入后执行
</script>；你看这样行吗
3.js怎么控制a标签的显示和隐藏
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!--
function show(){
document.getElementById("a").style.display = "none";
document.getElementById("b").style.display = "none";
}
function show_one(){
document.getElementById("a").style.display = "block";
document.getElementById("b").style.display = "block";
}
//-->
</SCRIPT>
<BODY>
<label type="text" id="a" value="姓名">；姓名</label><input type="text" id="b"/><br>
<input type="button" value="隐藏" onclick="show()"/>
<input type="button" value="显示" onclick="show_one()"/>
</BODY>
</HTML>
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