iframe 在子窗体中访问并控制父窗体中对象
通常IE 和火狐比较支持，貌似谷歌不是很好使，要是有更好的方法希望回帖！
testFrame.html
<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Test Iframe</title></head><body> <Iframe name="tt" src="frame1.html" width="200" height="200" scrolling="no" frameborder="0"></iframe> <h1 id="myH2" >hello,my wife</h1> </body> </html>
frame1.html
<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>无标题文档</title> <script type="text/javascript">function loadUI() {var txt = parent.document.getElementById("myH2");alert(txt.textContent);}</script></head><body><button value="btn" onClick="loadUI();"> button</button></body></html>