display显示.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script language="JavaScript">
function change(){
if(document.getElementById("selectcheck").value=='0'){
document.getElementById("a").style.display="";
document.getElementById("b").style.display="none";
}
if(document.getElementById("selectcheck").value=='1'){
document.getElementById("b").style.display="";
document.getElementById("a").style.display="none";
}
}
</script>
</head>
<body>
<select name="selectcheck" id="selectcheck" onclick="change();">
<option value="0" selected >出现aaaaa</option>
<option value="1">出现bbb</option>
</select>
<br><br><br><br><br><br>
<div id="a">aaaaa</div>
<div id="b" style="display:none">bbb</bbb>
</body>
</html>
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script language="JavaScript">
function change(){
if(document.getElementById("selectcheck").value=='0'){
document.getElementById("a").style.display="";
document.getElementById("b").style.display="none";
}
if(document.getElementById("selectcheck").value=='1'){
document.getElementById("b").style.display="";
document.getElementById("a").style.display="none";
}
}
</script>
</head>
<body>
<select name="selectcheck" id="selectcheck" onclick="change();">
<option value="0" selected >出现aaaaa</option>
<option value="1">出现bbb</option>
</select>
<br><br><br><br><br><br>
<div id="a">aaaaa</div>
<div id="b" style="display:none">bbb</bbb>
</body>
</html>