引用:

---

form{
margin: 0px;
padding: 0px;
}

---

引用:

---

element "iframe" undefined.
You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:

* incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Frameset" document type to get the "<frameset>" element),
* by using vendor proprietary extensions such as "<spacer>" or "<marquee>" (this is usually fixed by using CSS to achieve the desired effect instead).
* by using upper-case tags in XHTML (in XHTML attributes and elements must be all lower-case.

---

引用:

---

现在，弄得我不敢用其他的了，我现在只干使用DIV标签，到底XHTML还有什么？说是跟HTML差不多，我怕又会有冲突。我现在做的简单页面，只用了DIV标签，其他的啥都不敢用？

另外，iframe用曾来模拟，是不是<div><iframe></iframe><div>这个样子来使用。英文，看不懂。你的意思，没有全部理解。谢谢行者～

---

引用:

---

AJAX 全称Asynchronous javascript + XML。就是由javascript发起XMLHttpRequest，再由Server处理，返回XML格式的数据。其实根iframe+javascript这个格式差不多，不同的是iframe+javascript返回的是HTML形式的。

---