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iframe 親ウィンドウを一度だけ更新する方法は?
window.top.location = "http://www.site.com";
終わりのないリフレッシュをもたらします。
シンプルな if?
if
if ( window.top.location <> "http://www.site.com") { window.top.location = "http://www.site.com"; }