簡單來說，meta的效果就是再定義FB可辨識的標籤, 當你按分享時, FB便會抓取已定義的標籤內容作為他的分享抬頭圖片連結描述等等 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://www.facebook.com/2008/fbml"><head> <title>${name}</title> <!-- for plurk and twitter --> <!-- facebook like start --> <meta property="og:title" content="${name}"/> <!-- for facebook --> <meta property="og:type" content="activity"/> <meta property="og:url" content="${url}"/> <meta property="og:image" content="http://example.com/hello.jpg"/> <!-- full absolute url need --> <meta property="fb:admins" content="100000063646030"/> <!-- facebook user id --> <meta property="og:site_name" content="wallto"/> <meta property="og:description" content="${description}"/> <!-- facebook like end --> <!-- facebook share start --><meta name="title" content="title" /> <meta name="description" content="description" /> <link rel="image_src" href="http://example.com/hello.jpg" / > <!-- facebook share end --></head><body> <!-- AddThis Button BEGIN --> <div class="addthis_toolbox addthis_32x32_style addthis_default_style "> <a class="addthis_button_facebook"></a> <a class="addthis_button_twitter"></a> <a class="addthis_button_plurk"></a> <a class="addthis_button_email"></a> </div> <script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#pubid=xa-4d831e7d4379750e"></script> <!-- AddThis Button END --></body></html>Reference
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