使用window.name 进行数据跨域传递

来源：互联网发布：mac版pscc2017汉化包编辑：程序博客网时间：2024/06/04 22:03

转自 http://www.cnblogs.com/zbw911/

其中要点，

Stpe1，浏览器在Iframe中加载一个异域的页面，这个页面返回 <script>window.name=”任何数据”</script>，这时候，取 iframe.contentwindow.name是拒绝访问的。

Step2，在Iframe中加载一个本域中的任意页面，此时，iframe.contentwindow.name 就可以访问了，

DEMO：下面是不修饰的代码，

   1:  <script type="text/javascript">

2:

   3:          function getContents(iframe) {

   4:              try {

   5:                  // Make sure the iframe's window & document are loaded.

   6:                  if (!iframe.contentWindow || !iframe.contentWindow.document) {

   7:                      console.log("no contentwindow");

   8:                      return null;

   9:                  }

10:

  11:                  console.info("window.name=" + iframe.contentWindow.name);

  12:                  // Get the response from window.name

  13:                  return iframe.contentWindow.name;

  14:              } catch (e) {

  15:                  console.error(e);

  16:                  return null;

  17:              }

  18:          }

19:

20:

  21:          //getContents(this);

22:

23:

  24:          function test() {

  25:              var doc = document;

  26:              var iframe = doc.createElement('iframe');

  27:              doc.body.appendChild(iframe);

28:

  29:              var form = doc.createElement('form');

  30:              doc.body.appendChild(form);

31:

  32:              var requestId = "__Go";

  33:              iframe.contentWindow.name = requestId;

  34:              form.target = requestId;

  35:              form.action = "http://castest.youxituan.com/cas/JsLogin";

  36:              form.method = "post";

  37:              var isFirst;

  38:              var time = 0;

  39:              iframe.onload = function () {

  40:                  time++;

  41:                  console.info("time=" + time);

  42:                  if (time == 1) {

  43:                      console.info("first" + iframe.src);

  44:                      iframe.contentWindow.location = 'about:blank';

45:

  46:                      //iframe.contentWindow.document.write(".....");

  47:                      isFirst = false;

  48:                  } if (time == 2) {

  49:                      console.info("not first");

  50:                      window.alert(iframe.contentWindow.name);

51:

  52:                      //iframe.contentWindow.document.write('');

  53:                      //iframe.contentWindow.close();

  54:                      //document.body.removeChild(iframe);

55:

  56:                      //iframe.src = '';

  57:                      iframe = null;

  58:                  }

  59:                  console.log("onload");

  60:                  getContents(iframe);

61:

  62:              };

  63:              iframe.onreadystatechange = function () {

  64:                  console.log("onreadystatechange");

  65:                  getContents(iframe);

  66:              };

67:

  68:              form.submit();

  69:          }

70:

71:

  72:          $(function () {

  73:              test();

  74:          });

75:

76:

  77:      </script>