window.onFocus : Window Object : Window JAVASCRIPT TUTORIALS

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window.onFocus

The onFocus event handler is fired when the focus is placed on that particular window instance.



<html>
    <frameset cols="150,*">
      <frame name="toc"
             src="/toc.htm"
             onFocus='myFocusFunc()'
             marginwidth=1 marginheight=1 scrolling=AUTO>
      <frame name="body"
             src="/body.htm"
             marginwidth=10 marginheight=5 scrolling=AUTO>
    </frameset>
</html>