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常用JS语句(二)

2008-04-03 16:43 429 查看
<script language="javascript">


alert("错误~~ 请输入帐号!!");


location.href="javascript:history.back()"


</script>


--------------- 输出并重定向




<script language="javascript">


alert("添加成功~~!!");


location.href="BookList.asp"


</script>





---------------- 内嵌一个页面并设置为可编辑




<script language="javascript">


document.write ('<iframe src="text.asp" id="message" width="550" height="250"></iframe>')


frames.message.document.designMode = "On";


</script>






--------------- 检验复选框是否已选并提示




<script language="javascript">


function checkdata()


{


if (document.form1.viewhtml.checked == true)


{


alert("对不起,请取消“查看HTML源代码”后再添加!")


document.form1.viewhtml.focus()


return false


}


}


</script>






---------------- 用JavaScript 在超连接中打开一个新窗口(可控制大小)




<a href=# onClick="javascript:window.open('Buy.asp?id=<% = rs("Id") %>','','width=570,height=160,toolbar=no, status=no, menubar=no, resizable=yes, scrollbars=yes');return false;">打开一个窗口</a>




下面列出些常用的javascript,大家可以把这些做成一个类,方便在项目中重复的调用。




1.让文字不停地滚动




  <MARQUEE>滚动文字</MARQUEE>




2.记录并显示网页的最后修改时间




  <script language=javascript>


  document.write("最后更新时间: " + document.lastModified + "")


  </script>




3.关闭当前窗口




  <a href="/"onClick="javascript:window.close();return false;">关闭窗口</a>




4.5秒后关闭当前页




  <script language="javascript">


  <!--


  setTimeout('window.close();',5000);


  -->


  </script>




5.2秒后载入指定网页




  <head>


  <meta http-equiv="refresh" content="2;URL=http://你的网址">


  </head>




6.添加到收藏夹




  <Script Language="javascript">


  function bookmarkit()


  {


  window.external.addFavorite('http://你的网址','你的网站名称')


  }


  if (document.all)document.write('<a href="#" onClick="bookmarkit()">加入收藏夹</a>')


  </Script>




7.让超链接不显示下划线




  <style type="text/css">


  <!-


  a:link{text-decoration:none}


  a:hover{text-decoration:none}


  a:visited{text-decoration:none}


  ->


  </style>




8.让网页随意后退




<a href="javascript :history.go(-X)">X</a>




//把X换成你想要后退在页数


//把“-”变成“+”就为前进




9.设置该页为首页




  <body bgcolor="#FFFFFF" text="#000000">


  <!-- 网址:http://你的网址-->


  <a class="chlnk" style="cursor:hand" HREF


  onClick="this.style.behavior='url(#default#homepage)';


  this.setHomePage('你的网站名称);"><font color="000000" size="2" face="宋体">设为首页</font></a>


  </body>




10.节日倒计时




  <Script Language="javascript">


  var timedate= new Date("December 25,2003");


  var times="圣诞节";


  var now = new Date();


  var date = timedate.getTime() - now.getTime();


  var time = Math.floor(date / (1000 * 60 * 60 * 24));


  if (time >= 0)


  document.write("现在离"+times+"还有: "+time +"天")</Script>




11.单击按钮打印出当前页




  <Script Language="javascript">


  <!-- Begin


  if (window.print) {


  document.write('<form>'


  + '<input type=button name=print value="打印本页" '


  + 'onClick="javascript:window.print()"></form>');


  }


  // End -->


  </Script>




12.单击按钮‘另存为’当前页




  <input type="button" name="Button" value="保存本页"


  onClick="document.all.button.ExecWB(4,1)">


  <object id="button"


  width=0


  height=0


  classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2">


  <embed width="0" height="0"></embed>


  </object>




13.显示系统当前日期




  <script language=javascript>


  today=new Date();


  function date(){


  this.length=date.arguments.length


  for(var i=0;i<this.length;i++)


  this[i+1]=date.arguments }


  var d=new date("星期日","星期一","星期二","星期三","星期四","星期五","星期六");


  document.write(


  "<font color=##000000 style='font-size:9pt;font-family: 宋体'> ",


  today.getYear(),"年",today.getMonth()+1,"月",today.getDate(),"日",


  d[today.getDay()+1],"</font>" );


  </script>




14.不同时间段显示不同问候语




  <Script Language="javascript">


  <!--


  var text=""; day = new Date( ); time = day.getHours( );


  if (( time>=0) && (time < 7 ))


    text="夜猫子,要注意身体哦! "


  if (( time >= 7 ) && (time < 12))


    text="今天天气……哈哈哈,不去玩吗?"


  if (( time >= 12) && (time < 14))


    text="午休时间哦,朋友一定是不习惯午睡的吧?!"


  if (( time >=14) && (time < 18))


    text="下午茶的时间到了,休息一下吧! "


  if ((time >= 18) && (time <= 22))


    text="您又来了,可别和MM聊太久哦!"


  if ((time >= 22) && (time < 24))


    text="很晚了哦,注意休息呀!"


  document.write(text)


  //--->


  </Script>




15.水中倒影效果




  <img id="reflect" src="你自己的图片文件名" width="175" height="59">


  <script language="javascript">


  function f1()


  {


    setInterval("mdiv.filters.wave.phase+=10",100);


  }


  if (document.all)


  {


    document.write('<img id=mdiv src="'+document.all.reflect.src+'"


    style="filter:wave(strength=3,freq=3,phase=0,lightstrength=30) blur() flipv()">')


    window.onload=f1


  }


  </script>




16.慢慢变大的窗口




  <Script Language="javascript">


  <!--


  var Windowsheight=100


  var Windowswidth=100


  var numx=5


  function openwindow(thelocation){


  temploc=thelocation


  if


  (!(window.resizeTo&&document.all)&&!(window.resizeTo&&document.getElementById))


  {


    window.open(thelocation)


    return


  }


  windowsize=window.open("","","scrollbars")


  windowsize.moveTo(0,0)


  windowsize.resizeTo(100,100)


  tenumxt()


  }


  function tenumxt(){


  if (Windowsheight>=screen.availHeight-3)


    numx=0


  windowsize.resizeBy(5,numx)


  Windowsheight+=5


  Windowswidth+=5


  if (Windowswidth>=screen.width-5)


  {


    windowsize.location=temploc


    Windowsheight=100


    Windowswidth=100


    numx=5


    return


  }


  setTimeout("tenumxt()",50)


  }


  //-->


  </script>


  <p><a href="javascript:openwindow(http://www.xxx.com)">进入</a>




17.改变IE地址栏的IE图标




  我们要先做一个16*16的icon(图标文件),保存为index.ico。把这个图标文件上传到根目录下并在首页<head></head>之间加上如下代码:


<link REL = "Shortcut Icon" href="index.ico">




18.鼠标指向时弹出信息框


  <body>


  <a href onmouseover="alert('弹出信息!')">显示的链接文字</a>


</body>






19.单击鼠标右键弹出添加收藏夹对话框


  <body>


  <script Language=javascript>


  if (document.all)


  document.body.onmousedown=new function("if (event.button==2||event.button==3)


  window.external.addFavorite('您的网址','您的网站名称)")


  </script>


</body>




20.离开网页时和加载网站时提示你将本站加入收藏夹




可以很大的加大的网站的访问量。




一、在网页的






二、在网页中的 标记中加入下面的代码:




onunload=favorate()




当然如果你想在网页载入时提示只需要把




上面的onunload=favorate()改成onload=favorate()




21.JS制作网页标题栏滚动信息的显示:




将下面的代码copy到网页的<head>和</head>中.




<SCRIPT LANGUAGE=JAVASCRIPT>


<!--


var msg = "蓝色空间";


var speed = 300;


var msgud = " " + msg;


function titleScroll() {


if (msgud.length msgud = msgud.substring(1, msgud.length);


document.title = msgud.substring(0, msg.length);


window.setTimeout("titleScroll()", speed);


}


-->


</SCRIPT>




在网页的BODY中加入下面的代码:




<BODY onload="window.setTimeout('titleScroll()', 500)">






22.JS状态栏信息分行显示:




将下面的代码copy到网页的<head>和</head>中.




<SCRIPT LANGUAGE=JAVASCRIPT>


<!--


function makeArray(n) {


this.length = n;


}


function stopBanner() {


if (bannerRunning)


clearTimeout(timerID);


bannerRunning = false;


}


function startBanner() {


stopBanner();


showBanner();


} function showBanner() {


var text = ar[currentMessage];


if (offset < text.length) {


if (text.charAt(offset) == " ")


offset++;


var partialMessage = text.substring(0, offset + 1);


window.status = partialMessage;


offset++;


timerID = setTimeout("showBanner()", speed);


bannerRunning = true;


} else {


offset = 0;


currentMessage++;


if (currentMessage == arlength)


currentMessage = 0;


timerID = setTimeout("showBanner()", pause);


bannerRunning = true;


}


}


var speed = 100


var pause = 1000


var timerID = null;


var bannerRunning = false;


var currentMessage = 0;


var offset = 0;


var arlength = 3;


var ar = new makeArray(arlength);


ar[0] = "蓝色空间";


ar[1] = "欢迎你的光临";


ar[2] = "有建议请联系V-蓝动力";


-->


</SCRIPT>




在网页的BODY中加入下面的代码:




<BODY onload=startBanner()>




23. 可以在收藏夹中显示出你的图标




<link rel="Bookmark" href="favicon.ico">




24. 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>




25. 最小化、最大化、关闭窗口




<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">


<param name="Command" value="Minimize"></object>


<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">


<param name="Command" value="Maximize"></object>


<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">


<PARAM NAME="Command" value="Close"></OBJECT>




<input type=button value=最小化 onclick=hh1.Click()>


<input type=button value=最大化 onclick=hh2.Click()>


<input type=button value=关闭 onclick=hh3.Click()>


本例适用于IE




26. TEXTAREA自适应文字行数的多少




<textarea rows=1 name=s1 cols=27 onpropertychange="this.style.posHeight=this.scrollHeight">


</textarea>






27. 检测某个网站的链接速度:




把如下代码加入<body>区域中:


<script language=javascript>


tim=1


setInterval("tim++",100)


b=1




var autourl=new Array()


autourl[1]="www.njcatv.net"


autourl[2]="javacool.3322.net"


autourl[3]="www.sina.com.cn"


autourl[4]="www.nuaa.edu.cn"


autourl[5]="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[i]+"/"+Math.random()+" width=1 height=1 onerror=auto(http://";;+autourl[i]+"')>")}


run()</script>






28. 如何改变链接的鼠标形状




只需在链接上加上这一代码就行的了


或者跟上面的用CSS写也行




style="cursor:hand"       style="cursor:crosshair"


style="cursor:text"       style="cursor:wait"


style="cursor:move"       style="cursor:help"


style="cursor:e-resize"     style="cursor:n-resize"


style="cursor:nw-resize"     style="cursor:w-resize"


style="cursor:s-resize"     style="cursor:se-resize"


style="cursor:sw-resize"


以上代码你只需要加到连接或是页面的STYLE区里就可以实现鼠标多样化。




29.COOKIE脚本记录,有很大的用处。




function get_cookie(Name) {


var search = Name + "="


var returnvalue = "";


if (documents.cookie.length > 0) {


offset = documents.cookie.indexOf(search)


if (offset != -1) { // if cookie exists


offset += search.length


// set index of beginning of value


end = documents.cookie.indexOf(";", offset);


// set index of end of cookie value


if (end == -1)


end = documents.cookie.length;


returnvalue=unescape(documents.cookie.substring(offset, end))


}


}


return returnvalue;


}


function loadpopup(){


if (get_cookie('popped')==''){


openpopup()


documents.cookie="popped=yes"






}


}


说明:以上是JS代码,请自己加起始符和结束符
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