17.屏蔽功能键Shift,Alt,Ctrl?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><script>?
function?look(){??
if(event.shiftKey)??
alert("禁止按Shift键!";?//可以换成ALT?CTRL?
}??
document.onkeydown=look;??
</script>
function?look(){??
if(event.shiftKey)??
alert("禁止按Shift键!";?//可以换成ALT?CTRL?
}??
document.onkeydown=look;??
</script>
18.?网页不会被缓存?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><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">
<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">
19.怎样让表单没有凹凸感？?
?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><input?type=text?style="border:1?solid?#000000">
或?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><input?type=text?style="border-left:none;?border-right:none;?border-top:none;?border-bottom:??
1?solid?#000000"></textarea>
1?solid?#000000"></textarea>
20.<div><span>&<layer>的区别？??
<div>(division)用来定义大段的页面元素，会产生转行??
<span>用来定义同一行内的元素，跟<div>的唯一区别是不产生转行??
<layer>是ns的标记，ie不支持，相当于<div>?
21.让弹出窗口总是在最上面:?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?onblur="this.focus();">
22.不要滚动条???
让竖条没有:??
?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?style=`overflow:-Scroll;overflow-y:hidden`>??
</body>
</body>
让横条没有:??
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?style=`overflow:-Scroll;overflow-x:hidden`>??
</body>?
</body>?
两个都去掉？更简单了??
?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?scroll="no">??
</body>
</body>
23.怎样去掉图片链接点击后，图片周围的虚线？?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><a?href="#"?onFocus="this.blur()"><img?src="logo.jpg"?border=0></a>
24.电子邮件处理提交表单?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><form?name="form1"?method="post"?action="mailto***@***.com"?enctype="text/plain">??
<input?type=submit>?
</form>
<input?type=submit>?
</form>
25.在打开的子窗口刷新父窗口的代码里如何写？?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->window.opener.location.reload()
26.如何设定打开页面的大小?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?onload="top.resizeTo(300,200);">
打开页面的位置
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><body?onload="top.moveBy(300,200);">
27.在页面中如何加入不是满铺的背景图片,拉动页面时背景图不动??
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><style>??
body??
{background-image:url(logo.gif);?background-repeat:no-repeat;??
background-position:center;background-attachment:?fixed}??
</style>?
body??
{background-image:url(logo.gif);?background-repeat:no-repeat;??
background-position:center;background-attachment:?fixed}??
</style>?
28.?检查一段字符串是否全由数字组成?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><script?language="javascript"><!--?
function?checkNum(str){return?str.match(//D/)==null}?
alert(checkNum("1232142141"?
alert(checkNum("123214214a1"?
//?--></script>
function?checkNum(str){return?str.match(//D/)==null}?
alert(checkNum("1232142141"?
alert(checkNum("123214214a1"?
//?--></script>
29.?获得一个窗口的大小?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->document.body.clientWidth;
document.body.clientHeight
document.body.clientHeight
30.?怎么判断是否是字符?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
-->if?(/[^/x00-/xff]/g.test(s))?alert("含有汉字";?
else?alert("全是字符";
else?alert("全是字符";
31.TEXTAREA自适应文字行数的多少?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><textarea?rows=1?name=s1?cols=27?onpropertychange="this.style.posHeight=this.scrollHeight">?
</textarea>
</textarea>
32.?日期减去天数等于第二个日期?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><script?language=javascript>?
function?cc(dd,dadd)?
{?
//可以加上错误处理?
var?a?=?new?Date(dd)?
a?=?a.valueOf()?
a?=?a?-?dadd?*?24?*?60?*?60?*?1000?
a?=?new?Date(A)?
alert(a.getFullYear()?+?"年"?+?(a.getMonth()?+?1)?+?"月"?+?a.getDate()?+?"日"?
}?
cc("12/23/2002",2)?
</script>
function?cc(dd,dadd)?
{?
//可以加上错误处理?
var?a?=?new?Date(dd)?
a?=?a.valueOf()?
a?=?a?-?dadd?*?24?*?60?*?60?*?1000?
a?=?new?Date(A)?
alert(a.getFullYear()?+?"年"?+?(a.getMonth()?+?1)?+?"月"?+?a.getDate()?+?"日"?
}?
cc("12/23/2002",2)?
</script>
33.?选择了哪一个Radio?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><HTML><script?language="vbscript">?
function?checkme()?
for?each?ob?in?radio1?
if?ob.checked?then?window.alert?ob.value?
next?
end?function?
</script><BODY>?
<INPUT?name="radio1"?type="radio"?value="style"?checked>style?
<INPUT?name="radio1"?type="radio"?value="barcode">Barcode?
<INPUT?type="button"?value="check"?onclick="checkme()">?
</BODY></HTML>
function?checkme()?
for?each?ob?in?radio1?
if?ob.checked?then?window.alert?ob.value?
next?
end?function?
</script><BODY>?
<INPUT?name="radio1"?type="radio"?value="style"?checked>style?
<INPUT?name="radio1"?type="radio"?value="barcode">Barcode?
<INPUT?type="button"?value="check"?onclick="checkme()">?
</BODY></HTML>
34.脚本永不出错?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><SCRIPT?LANGUAGE="javascript">??
<!--?Hide??
function?killErrors()?{??
return?true;??
}??
window.onerror?=?killErrors;??
//?-->??
</SCRIPT>
<!--?Hide??
function?killErrors()?{??
return?true;??
}??
window.onerror?=?killErrors;??
//?-->??
</SCRIPT>
35.ENTER键可以让光标移到下一个输入框?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><input?onkeydown="if(event.keyCode==13)event.keyCode=9">
36.?检测某个网站的链接速度：?
把如下代码加入<body>区域中:?
<!--<br />
<br />
Code highlighting produced by Actipro CodeHighlighter (freeware)<br />
http://www.CodeHighlighter.com/<br />
<br />
--><script?language=javascript>?
tim=1?
setInterval("tim++",100)?
b=1?
var?autourl=new?Array()?
autourl[1]="http://www.njcatv.net/";?
autourl[2]="javacool.3322.net"?
autourl[3]="http://www.sina.com.cn/";?
autourl[4]="http://www.nuaa.edu.cn/";?
autourl[5]="http://www.cctv.com/";?
function?butt(){?
document.write("<form?name=autof>"?
for(var?i=1;i<autourl.length;i++)?
document.write("<input?type=text?name=txt"+i+"?size=10?value=测试中……>?=》<input?type=text??
name=url"+i+"?size=40>?=》<input?type=button?value=GO??
onclick=window.open(this.form.url"+i+".value)><br>"?
document.write("<input?type=submit?value=刷新></form>"?
}?
butt()?
function?auto(url){?
document.forms[0]["url"+b].value=url?
if(tim>200)?
{document.forms[0]["txt"+b].value="链接超时"}?
else?
{document.forms[0]["txt"+b].value="时间"+tim/10+"秒"}?
b++?
}?
function?run(){for(var?i=1;i<autourl.length;i++)document.write("<img??
src=http://"+autourl+"/"+Math.random()+"?width=1?height=1??
onerror=auto(http://";+autourl+"`)>"}?
run()</script>
tim=1?
setInterval("tim++",100)?
b=1?
var?autourl=new?Array()?
autourl[1]="http://www.njcatv.net/";?
autourl[2]="javacool.3322.net"?
autourl[3]="http://www.sina.com.cn/";?
autourl[4]="http://www.nuaa.edu.cn/";?
autourl[5]="http://www.cctv.com/";?
function?butt(){?
document.write("<form?name=autof>"?
for(var?i=1;i<autourl.length;i++)?
document.write("<input?type=text?name=txt"+i+"?size=10?value=测试中……>?=》<input?type=text??
name=url"+i+"?size=40>?=》<input?type=button?value=GO??
onclick=window.open(this.form.url"+i+".value)><br>"?
document.write("<input?type=submit?value=刷新></form>"?
}?
butt()?
function?auto(url){?
document.forms[0]["url"+b].value=url?
if(tim>200)?
{document.forms[0]["txt"+b].value="链接超时"}?
else?
{document.forms[0]["txt"+b].value="时间"+tim/10+"秒"}?
b++?
}?
function?run(){for(var?i=1;i<autourl.length;i++)document.write("<img??
src=http://"+autourl+"/"+Math.random()+"?width=1?height=1??
onerror=auto(http://";+autourl+"`)>"}?
run()</script>