常用HTML代码解释7

23. 永远都会带着框架
<script. language="JavaScript"><!--
if (window == top)top.location.href = "frames.htm"; //frames.htm为框架网页
// --></script>

24. 防止被人frame.

<SCRIPT. LANGUAGE=JAVASCRIPT><!--
if (top.location != self.location)top.location=self.location;
// --></SCRIPT>

25. 网页将不能被另存为

<noscript><iframe. src=*.html></iframe></noscript>

26. 查看网页源代码

<input type=button value=查看网页源代码
onclick="window.location = "view-source:"+ "http://www.pconline.com.cn"">

27.删除时确认

<a href="javascript:if(confirm("确实要删除吗?"))location="boos.asp? &areyou=删除&page=1"">删除</a>

28.屏蔽功能键Shift,Alt,Ctrl
<script>
function look(){
if(event.shiftKey)
alert("禁止按Shift键!"); //可以换成ALT　CTRL
}
document.onkeydown=look;
</script>

29. 网页不会被缓存
<META. HTTP-EQUIV="pragma" CONTENT="no-cache">
<META. HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META. HTTP-EQUIV="expires" CONTENT="Wed, 26 Feb 1997 08:21:57 GMT">
或者<META. HTTP-EQUIV="expires" CONTENT="0">

30.怎样让表单没有凹凸感？
<input type=text style="border:1 solid #000000">
或 <input type=text style="border-left:none; border-right:none; border -top:none; border-bottom: 1 solid #000000"></textarea>