http://localhost/getDomainData.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <head> <title>跨域获取数据</title> <script type="text/javascript"> function domainData(url, fn) { var isFirst = true; var iframe = document.createElement('iframe'); iframe.style.display = 'none'; var loadfn = function(){ if(isFirst){ iframe.contentWindow.location = 'http://localhost/null.html'; isFirst = false; } else { fn(iframe.contentWindow.name); iframe.contentWindow.document.write(''); iframe.contentWindow.close(); document.body.removeChild(iframe); iframe.src = ''; iframe = null; } }; iframe.src = url; if(iframe.attachEvent){ iframe.attachEvent('onload', loadfn); } else { iframe.onload = loadfn; } document.body.appendChild(iframe); } </script> </head> <body> <script type="text/javascript"> domainData('http://127.0.0.3/data.html', function(data){ alert(data); }); </script> </body> </html>
http://localhost 添加一个空HTML页。名称为：http://localhost/null.html，是必须的。内容可为空。
http://127.0.0.3/data.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>b域名</title> <script> window.name = '需要跨域传递的数据'; </script> </head> <body> </body> </html>
浏览 http://localhost/getDomainData.html 即 获得127.0.0.3域名下data.html传输的值
调用domainData函数必须在body后面，或页面加载完后。
调用时会执行 http://b.com/data.html 页面的脚本。
