跨域POST
(function($){
window.isIE6=$.browser.msie && jQuery.browser.version==6.0;
jQuery.extend({
ajaxFormNums:0,
ajaxFormPost:function(sURL, datas, callBack,domains){/*[sURL=提交地址, datas=要提交的数据对像, callBack=回
调,domain=域]*/
domains=domains||'51.com';
var on='TEMP_POST_'+$.ajaxFormNums;
var of=[];
of.push('<div id="'+on+'_DIV" style="position:absolute;z-index:10;top:-20000100px;"><iframe
id="'+on+'_IFRAME" name="'+on+'_IFRAME" height="1" width="1" src="http://friend.51.com/ajax_blank.php?d='+encodeURIComponent
(domains)+'" frameborder="0" border="0" scrolling="no"></iframe><form id="'+on+'_FORM" name="'+on+'_FORM" method="post"
action="'+sURL+'" target="'+on+'_IFRAME">');
$.each(datas,function(i,n){of.push('<textarea name="'+i+'"
style="width:1px;height:1px;">'+n+'</textarea>');});
of.push('<input type="submit" value="Submit" name="b1" style="width:1px;height:1px;" /></form></div>');
$(document.body).append(of.join(''))//.insertAdjacentHTML("beforeEnd", of.join(''));
//document.body.insertAdjacentHTML("beforeEnd", of.join(''));
of=null;
$('#'+on+'_IFRAME').bind('load',function(){
if(!$(this).attr('summary'))
{
$(this).attr('summary',1);
$('#'+on+'_FORM').submit();
return false;
}
if(isIE6)
{
if($.isFunction(callBack))
{
callBack(window.name);
}
else
{
eval(callBack+'(window.name)');
}
}
else
{
var oIf= this.id;
if($.isFunction(callBack))
{
if(navigator.userAgent.toLowerCase().indexOf('se 2.x')>-1)
{
callBack(frames[oIf].document.body.innerText);
}
else
{
callBack(frames[oIf].document.body.innerHTML);
}
}
else
{
eval(callBack+'(frames[oIf].document.body.innerHTML)');
}
}
window.setTimeout(function(){$('#'+on+'_DIV').remove();},1);
});
$.ajaxFormNums++;
}
});
})(jQuery);
在网站根目录建个文件ajax_blank.php
内容为:
<html><head><title>51.com</title><script type="text/javascript">document.domain="51.com";</script></head><body></body></html>
并且在调用的页面加js:
document.domain='51.com';
php部分
$result=-1;
echo "<script>if(!/msie 6/i.test(navigator.userAgent)){document.domain='51.com';}else{parent.name='$result';}</script>$result";
跨域GET
$.getJSON("http://friend.51.com/friend/global_hello_api.php?callback=?",{receiver:receiver,source:source},function(data){
alert(data.info);
})
php处理部分:
$ret['info'] = iconv("GBK", "UTF-8", "不存在该用户");
$result = json_encode($ret);
echo request_check($_GET['callback']).'('.$result.')';
$_GET['callback']需处理一下,防止rss攻击
function request_check($post){
if(!get_magic_quotes_gpc()) // 判断magic_quotes_gpc是否为打开
{
$post = addslashes($post); // 进行magic_quotes_gpc没有打开的情况对提交数据的过滤
}
//$post = str_replace("_", "\_", $post); // 把 '_'过滤掉
//$post = str_replace("%", "\%", $post); // 把' % '过滤掉
$post = nl2br($post); // 回车转换
$post= htmlspecialchars($post, ENT_QUOTES); // html标记转换
return $post;
}
ie6下jsonp返回不执行的解决办法
在php返回头部加
header('cache-control:no-cache;');
header('Content-Encoding: plain');
另外在js触发按钮加return false;解决ie6下的ajax中断问题