ajax跨域解决方法
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);});$.ajaxFormNums++;}});})(jQuery);$.ajaxFormPost('http://localhost/api.php?act=say', {cont:cont}, function(data){alert(data);});<html><head><title>51.com</title><script type="text/javascript">document.domain="51.com";</script></head><body></body></html>
document.domain='51.com';
$result=-1;echo "<script>if(!/msie 6/i.test(navigator.userAgent)){document.domain='51.com';}else{parent.name='$result';}</script>$result";$.getJSON("http://localhost/api.php?callback=?",{receiver:receiver},function(data){alert(data.info);})$ret['info'] = iconv("GBK", "UTF-8", "不存在该用户");$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;}header('cache-control:no-cache;');header('Content-Encoding: plain');