<html>
<header>
<title>JavaScript测试</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</header>
<body OnLoad="loadform()">
<form name=f method=post>
<SELECT id=sel_cats style="WIDTH: 250px; HEIGHT: 100px" multiple size=5 name=sel_cats[]>
<INPUT class=button type=submit value=Import name=import>
</SELECT>
</form><script Language="JavaScript">
function loadform(){
var oOption = Document.createElement("OPTION");
Document.GetElementById(sel_cats).options.add(oOption);
oOption.innerText = "Two";
oOption.value = "2";
}
</script></body>
</html>我写了个很简单的网页, 怎么提示我 document 没有定义呢?
<header>
<title>JavaScript测试</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</header>
<body OnLoad="loadform()">
<form name=f method=post>
<SELECT id=sel_cats style="WIDTH: 250px; HEIGHT: 100px" multiple size=5 name=sel_cats[]>
<INPUT class=button type=submit value=Import name=import>
</SELECT>
</form><script Language="JavaScript">
function loadform(){
var oOption = Document.createElement("OPTION");
Document.GetElementById(sel_cats).options.add(oOption);
oOption.innerText = "Two";
oOption.value = "2";
}
</script></body>
</html>我写了个很简单的网页, 怎么提示我 document 没有定义呢?
<header>
<title>JavaScript测试 </title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</header>
<body OnLoad="loadform()">
<form name=f method=post>
<SELECT id="sel_cats" style="WIDTH: 250px; HEIGHT: 100px" multiple size=5 name=sel_cats[]>
<INPUT class=button type=submit value=Import name=import></SELECT>
</form><script Language="JavaScript">
function loadform(){
var oOption = document.createElement("OPTION");
document.getElementById(sel_cats).options.add(oOption);
oOption.innerText = "Two";
oOption.value = "2";
}
</script></body>
</html>
function loadform(){
var oOption = document.createElement("OPTION");
document.getElementById('sel_cats').options.add(oOption);
oOption.innerText = "Two";
oOption.value = "2";
}
</script>