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function setSelect() {
var s = document.all.tags("select");
for(var i=0;i<s.length;i++) {
s[i].selectedIndex = s[i].default_select;
}
}
<!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>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="" />
<meta name="keywords" content="" />
<meta name="description" content="" />
</head>
<body>
<form method="post" action="">
<input type="text" />
<select default_select="1">
<option value="">请选择</option>
<option value="">1</option>
<option value="">2</option>
<option value="">3</option>
</select>
<input type="button" name="cancel" id="cancel" value="取消编辑" />
</form>
<script type="text/javascript">
<!--
function setSelect() {
var s = document.all.tags("select");
for(var i=0;i<s.length;i++) {
s[i].selectedIndex = s[i].default_select;
}
}
setSelect();
document.getElementById("cancel").onclick = function() {
this.form.reset();
setSelect();
};
//-->
</script>
</body>
</html>