我想通过帖子将信息传递给iframe。 (可能是执行帖子的jquery或javascript,它并不重要)。
无法通过查询字符串发送信息,因为我无权更改iframe引入页面的方式。
此数据将决定iframe中内容的布局,以便我如何制作以便在发送帖子后更新iframe? (可能刷新?)
答案 0 :(得分:1)
我写了一个blog post关于使用jQuery执行此操作以使用隐藏的iframe上传文件。这是代码:
以下是表单的HTML:
<div id="uploadform">
<form id="theuploadform">
<input type="hidden" id="max" name="MAX_FILE_SIZE" value="5000000" >
<input id="userfile" name="userfile" size="50" type="file">
<input id="formsubmit" type="submit" value="Send File" >
</form>
允许jQuery创建iframe的DIV你可以用一点CSS隐藏它:
<div id="iframe" style="width:0px height:0px visibility:none">
</div>
显示回调结果的DIV:
<div id="textarea">
</div>
jQuery代码:
<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#formsubmit").click(function() {
var userFile = $('form#userfile').val();
var max = $('form#max').val();
var iframe = $( '<iframe name="postframe" id="postframe" class="hidden" src="about:none" />' );
$('div#iframe').append( iframe );
$('#theuploadform').attr( "action", "uploader.php" )
$('#theuploadform').attr( "method", "post" )
$('#theuploadform').attr( "userfile", userFile )
$('#theuploadform').attr( "MAX_FILE_SIZE", max )
$('#theuploadform').attr( "enctype", "multipart/form-data" )
$('#theuploadform').attr( "encoding", "multipart/form-data" )
$('#theuploadform').attr( "target", "postframe" )
$('#theuploadform').submit();
//need to get contents of the iframe
$("#postframe").load(
function(){
iframeContents = $("iframe")[0].contentDocument.body.innerHTML;
$("div#textarea").html(iframeContents);
}
);
return false;
});
});
</script>
我使用像这个uploader.php这样的php应用程序来处理文件:
<?php
$uploaddir = 'uploads/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
$maxfilesize = $_POST[MAX_FILE_SIZE];
if ($maxfilesize > 5000000) {
//Halt!
echo "Upload error: File may be to large.<br/>";
exit();
}else{
// Let it go
}
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
print('File is valid, and was successfully uploaded. ');
} else {
echo "Upload error: File may be to large.<br/>";
}
chmod($uploadfile, 0744);
?>
除此之外还有你需要的东西,但它在jQuery中说明了这个概念。
答案 1 :(得分:0)
我没有方便的代码,但我的团队完全用Javascript完成了这个。我记得它是这样的:
function postToPage() {
var iframe = document.getElementById('myIFrame');
if (iframe) {
var newForm = '<html><head></head><body><form...> <input type="hidden" name="..." value="..." /> </form><script type=\"text/javascript\">document.forms[0].submit();</scrip' + 't></body></html>';
iframe.document.write(newForm); //maybe wrong, find the iframe's document and write to it
}
}