实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<head>
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<script>
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function changeStyle()
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{
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var x=document.getElementById("myframe");
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var y=(x.contentWindow || x.contentDocument);
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if (y.document)y=y.document;
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y.body.style.backgroundColor="#0000ff";
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}
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</script>
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</head>
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<body>
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​
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<iframe id="myframe" src="demo_iframe.htm">
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<p>Your browser does not support iframes.</p>
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</iframe>
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<br><br>
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​
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<input type="button" onclick="changeStyle()" value="Change background color">
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​
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</body>
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</html>