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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> upload </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<FORM ACTION="load.jsp" METHOD="POST" ENCTYPE="mutipart/form-data" name="myform">
ÇëÑ¡ÔñÉÏ´«Îļþ£º<INPUT TYPE="file" NAME="picture"/>
<INPUT TYPE="button" value="Ìá ½»" onclick="check(myform);"/>
<INPUT TYPE="button" value="È¡ Ïû" onclick="window.close();"/>
</FORM>
</BODY>
</HTML>
<script language="javascript">
function isEmpty(str){
for(var i=0;i<str.length;i++){
if(str.charAt(i)!==" "){
return false;
}
}
return true;
}
function check(form){
var fileName = form.picture.value;
if(isEmpty(fileName)){
alert("ÇëÑ¡ÔñÎļþÃû");
form.picture.focus();
return false;
}
//lastIndexOfÈç¹ûûÓÐËÑË÷µ½Ôò·µ»ØÎª-1
if(fileName.lastIndexOf(".")!=-1)
{
var fileType = (fileName.substring(fileName.lastIndexOf(".")+1,fileName.length)).toLowerCase();
var suppotFile = new Array();
suppotFile[0] = "gif";
suppotFile[1] = "bmp";
suppotFile[2] = "jpg";
for(var i =0;i<suppotFile.length;i++){
if(suppotFile[i]==fileType){
return true;
}else{
continue;
}
}
alert("²»Ö§³ÖÎļþÀàÐÍ"+fileType);
return false;
}else
{
alert("ÎļþÖ»Ö§³ÖJIF£¬BMP£
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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
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3.´«Í³µÄHTMLÎĵµË³ÐòÊÇ:document- >html- >(head,body)
4.Ò»¸öä¯ÀÀÆ÷´°¿ÚÖеÄDOM˳ÐòÊÇ:window- >(navigator,screen,history,location,document)
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<html>
<head>
<title></title>
</head>
<body>
<form id=aa name=aa>
<input type=button value="ͬÒâ(10)" id=a1 disabled="disabled">
</form>
</body>
</html>
<script>
var num=10;
window.setTimeout("aa()",1000);
function ......