<!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=gb2312" />
<title>无标题文档</title>
<script type="text/javascript">
function addList(){
var list = document.getElementById("list");
for(var i = 1; i <= 5; i++){
var newOption = document.createElement("option");
newOption.setAttribute("value", i);
newOption.appendChild(document.createTextNode("测试数据" + i));
list.appendChild(newOption);
}
}
function clearList(){
var list = document.getElementById("list");
for(var i = list.options.length; i >= 0; i--){
list.remove(i);
}
//注意:每删除一个option其它option的index特性会自动重置,因此,按以下方法(即从上往下删是清除不了的)
//for(var i = 0; i< list.options.length; i++){
// list.remove(i);
//}
}
</script>
</head>
<body>
<select name="list" id="list">
</select>
<input type="button" onclick="addList()" value="生成"/>
<input type="button" onblur="clearList()" value="清空" />
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript">
function addList(){
var list = document.getElementById("list");
for(var i = 1; i <= 5; i++){
var newOption = document.createElement("option");
newOption.setAttribute("value", i);
newOption.appendChild(document.createTextNode("测试数据" + i));
list.appendChild(newOption);
}
}
function clearList(){
var list = document.getElementById("list");
for(var i = list.options.length; i >= 0; i--){
list.remove(i);
}
//注意:每删除一个option其它option的index特性会自动重置,因此,按以下方法(即从上往下删是清除不了的)
//for(var i = 0; i< list.options.length; i++){
// list.remove(i);
//}
}
</script>
</head>
<body>
<select name="list" id="list">
</select>
<input type="button" onclick="addList()" value="生成"/>
<input type="button" onblur="clearList()" value="清空" />
</body>
</html>