jQuery通过标签名给标签追加属性?

html标签

<embed src="" quality="high" width="480" height="400" align="middle" allowscriptaccess="always" type="application/x-shockwave-flash" />

追加 allowFullScreen="true" 属性

$("#embed").attr("allowFullScreen","true");

$("embed").attr("allowFullScreen","true");

document.getElementsByTagName("embed").setAttribute("allowFullScreen","true");
多用用JS，用jQuery很使人停滞不前