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1
<iframe src="https://www.mifengjc.com/examples/iframe-alert-title/result.html" title="iframe 实例 1" width="400" height="300">2
<p>您的浏览器不支持 iframes。</p>3
</iframe>4
<iframe src="https://www.mifengjc.com/examples/iframe-alert-title/result.html" title="iframe 实例 1" width="400" height="300"> <p>您的浏览器不支持 iframes。</p></iframe>