学步园

当一个窗口被嵌套在很多iframe或window.showModalDialog者中，用这个方法找到顶窗口（前提是window.showModalDialog的前一

个窗口传了window对象）//主界面window对象<br /> var main_ui_w = window;<br /> //判断FF<br /> if (!$.browser.msie) {<br /> //判断为模态窗口<br /> if (window.dialogArguments != undefined) {<br /> get_main_ui_w();<br /> alert(main_ui_w.document.getElementById("Corp_ID").value);<br /> } //end of if (window.dialogArguments != undefined) {<br /> } //end of if ($.browser.msie)</p> <p> var w;<br /> function get_main_ui_w() {<br /> if (w == undefined) {<br /> w = window;<br /> }<br /> //模态<br /> if (w.dialogArguments != undefined) {<br /> w = w.dialogArguments;<br /> //判断是否是主窗口</p> <p> //传的对象中，属性win也是window对象<br /> if (w.document == undefined) {<br /> w = w.win;<br /> if (w.document.getElementById("Corp_ID") != null) {<br /> //是，返回<br /> main_ui_w = w;<br /> return ;<br /> } else {<br /> //否，迭代<br /> get_main_ui_w();<br /> } // end of if (w.document.getElementById("Corp_ID") == null)<br /> } else {<br /> if (w.document.getElementById("Corp_ID") != null) {<br /> //是，返回<br /> main_ui_w = w;<br /> return w;<br /> } else {<br /> //否，迭代<br /> get_main_ui_w();<br /> } // end of if (w.document.getElementById("Corp_ID") == null)<br /> }<br /> }<br /> //iframe<br /> else {<br /> w = w.parent;<br /> //判断是否是主窗口<br /> if (w.document.getElementById("Corp_ID") != null) {<br /> //是，返回<br /> main_ui_w = w;<br /> return;<br /> } else {<br /> //否，迭代<br /> get_main_ui_w();<br /> } // end of if (w.document.getElementById("Corp_ID") == null)<br /> }<br /> // end of if (window.dialogArguments != undefined)<br /> }<br />