A small example of operations between parent and child windows

1 The operation between the child parent window opened with window. openr is different from that of the framework. The child window and the parent window are associated with opener. The source window needs to access the subwindow through its handle. The following small example is intended to help new users better understand their operations.
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3 Test.htm
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5 < Html >
6 < Head >
7 < Meta HTTP - Equiv = " Content-Type " Content = " Text/html; charset = gb2312 " >
8 < Meta name = " Generator " Content = " Microsoft Front Page 4.0 " >
9 < Meta name = " Progid " Content = " FrontPage. Editor. Document " >
10 < Title > Actions on the Child parent window </ Title >
11 </ Head >
12 < Body >
13 < Script >
14 VaR Win = Null ;
15 Function OP (){
16 Win = Window. Open ( " About: blank " , " Win " , " Width = 200, Height = 200 " );
17 Win.doc ument. Write ( " <Input type = 'button 'value = 'close parent window 'onclick = 'window. opener. Opener = NULL; window. opener. Close ()'> " );
18 Win.doc ument. Write ( " <Input type = 'button 'value = 'refresh your window 'onclick = 'window. opener. Location. Reload ()'> " );
19 }
20 </ Script >
21 < Input onclick = " OP () " Value = " Open Window " Type = " Button " > < Input type = " Button " Value = " Minimize " Onclick = " If (WIN & Win. Open &&! Win. Closed) {win. resizeTo (0, 0); win. moveTo (0, window. Screen. width);} else alert ('window not opened or closed ') " > < Input type = " Button " Value = " Maximize " Onclick = " If (WIN & Win. Open &&! Win. closed) {win. moveTo (-4,-4); win. resizeTo (screen. availwidth + 8, screen. availheight + 8);} else alert ('No window opened or closed '); " > < Input type = Button Value = " Close subwindow " Onclick = " If (WIN & Win. Open &&! Win. Closed) {win. Opener = NULL; win. Close ()} else alert ('window not opened or closed ') " > < Input type = Button Value = " Refresh subwindow " Onclick = " If (WIN & Win. Open &&! Win. Closed) {win. Location. Reload (); win. Focus ()} else alert ('window not opened or closed ') " > < Input type = " Button " Value = " View the size of the subwindow " Onclick = " If (WIN & Win. Open &&! Win.closedw.alert(win.doc ument. Body. clientwidth + '* 'win.doc ument. Body. clientheight); win. Focus () ;}else {alert ('window not opened or closed ')}; " >
22 </ Body >
23 </ Html >
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