获取控件id

普通状态中JS获取控件ID
document.getElementById('controlID');

 

JS获取父窗口控件ID
window.parent.document.getElementById("controlID");

 

JS获取iframe中控件ID
window.frames['iframeID'].document.getElementById("controlID");

 

JS获取传入页面中控件ID
opener.document.getElementById('controlID').value;