Javascript(js)整理及应用

妖狐艹你老母 2022-10-01 00:45 159阅读 0赞

类型转换:parseInt/parseFloat/toString  
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类型判断:typeof;eg:if(typeof(var)!="undefined")/isNaN  
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字符处理函数:toLowerCase/touppercase/  
substring(从哪里截到哪)/substr(从哪里开始;截多少个字符) /indexOf(字串中找某串字符)/replace(

替换函数)/  
charCodeAt  
concat  
split  
join  
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定时处理函数:setInterval;setTimeout;clearTimeout;clearInterval  
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两个显示控制属性:visibility(hidden,hide,show,visible);display(none,block,inline)  
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编码的一些函数:escape();  
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取得对象的方法:  
document.getElementsByTagName(根据标签名获得对象组)/  
document.getElementsByTagName('head').item(0)  
document.getElementsByName(通过NAME获得对象)/  
document.getElementById(通过ID获得对象)/  
document.form1.f1/  
document.all.tags(t)\[id\]  
document.all\[id\]  
document.layers\[id\]  
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不常用的一些方法:  
moveToAbsolute:  
fromElement  
toElement  
contains  
captureEvents  
parent.frames  
moveTo(x,y)  
resizeBy(x,y)  
resizeTo(x,y)  
attachEvent('onmousedown',showHide);  
document.createElement('')  
document.createTextNode('')  
obj.setAttribute('src','')  
obj.getAttribute('')  
event.srcElement  
style.cssText  
document.body.appendChild  
document.body.removeChild  
document.body.insertAdjacentHTML("AfterBegin",s)  
innerHTML/  
removeNode  
insertBefore  
arguments  
event.keyCode  
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正则相关:RegExp(eg:new RegExp("/"","g"))

一些长宽及位置属性:  
window.innerHeight  
window.innerWidth  
document.documentElement.clientWidth  
document.documentElement.clientHeight  
document.body.clientWidth  
document.body.clientHeight  
document.body.offsetWidth  
document.body.offsetHeight  
document.body.scrollLeft  
document.body.scrollTop  
document.location.reload()  
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window一些方法:  
window.οnerrοr=function()\{return true;\}隐去报错  
window.onload/window.onunload  
window.status  
window.parent.location.href  
window.location.href  
window.top.location.href  
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数学方法:  
Math.max  
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数组方法:  
length  
slice  
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JS输出方法:  
document.write(s);  
alert(s);  
confirm  
prompt  
document.writeln  
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弹窗方法:  
window.showModalDialog(<url>,<标题>,<属性>)  
window.open("","","");

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2、 回复：js常用函数整理~~~~  
控制横向和纵向滚动条的显隐？  
<body style="overflow-y:hidden"> 去掉x轴  
<body style="overflow-x:hidden"> 去掉y轴  
<body scroll="no">不显

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表格变色  
<TD οnmοuseοver="this.style.backgroundColor='\#FFFFFF'"  
οnmοuseοut="this.style.backgroundColor=''"  
style="CURSOR: hand">  
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禁止复制，鼠标拖动选取  
<body οndragstart=window.event.returnValue=false

οncοntextmenu=window.event.returnValue=false onselectstart=event.returnValue=false>  
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普通iframe页面  
<iframe name="name" src="main.htm" width="450" height="287" scrolling="Auto"

frameborder="0"></iframe>

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iframe自适应高度  
<iframe name="pindex" src="index.asp" frameborder=false scrolling="auto" width="100%"

height="100%" frameborder=no οnlοad="document.all

\['pindex'\].style.height=pindex.document.body.scrollHeight" ></iframe>  
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IE地址栏前换成自己的图标&可以在收藏夹中显示出你的图标  
<link rel="Shortcut Icon" href="favicon.ico">  
<link rel="Bookmark" href="favicon.ico">  
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字号缩放  
越来越多的人长时间的泡网，眼镜的普及率也越来越高，让文字大点，让更多的用户看的更清楚。  
<script type="text/javascript">  
function doZoom(size)  
\{document.getElementById('zoom').style.fontSize=size+'px';\}  
</script>  
<span id="zoom">需要指定大小的文字</span>  
<a href="javascript:doZoom(16)">大</a> <a href="javascript:doZoom(14)">中</a> <a

href="javascript:doZoom(12)">小</a>  
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select挡住div的解决方法  
在div里加入下面的代码，根据需要调整就可以了。  
<iframe src="javascript:false" scrolling="no" frameborder="0" style="z-index:-

1;position:absolute; top:5px; left:2px;width:168;height:100px;">  
</iframe>

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iframe(嵌入式帧)自适应高度  
填写的嵌入地址一定要和本页面在同一个站点上，否则会提示“拒绝访问！”。对跨域引用有权限问题，

请查阅其他资料。  
<iframe name="guestbook" src="gbook/index.asp" scrolling=no width="100%" height="100%"

frameborder=no οnlοad="document.all

\['guestbook'\].style.height=guestbook.document.body.scrollHeight"></iframe>  
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跳转菜单新窗口  
<select name="select" οnchange="window.open(this.options\[this.selectedIndex\].value)">  
<option value="[http://www.microsoft.com/ie][http_www.microsoft.com_ie]"> Internet Explorer</option>  
<option value="[http://www.microsoft.com][http_www.microsoft.com]"> Microsoft Home</option>  
<option value="[http://msdn.microsoft.com][http_msdn.microsoft.com]"> Developer Network</option>  
</select>  
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flash透明选项  
<param name="wmode" value="transparent">  
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添加到收藏夹和设为首页  
添加到收藏夹：  
<a href="javascript:window.external.addFavorite('http://链接','说明');">添加到收藏夹</a>  
设为首页：  
<a href=\# οnclick=this.style.behavior='url(\#default\#homepage)';this.setHomePage ('http://链

接');>设为首页</a>  
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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>  
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节日倒计时  
<Script Language="JavaScript">  
　　 var timedate= new Date("October 1,2002");  
　　 var times= "国庆节";  
　　 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>  
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加在HEAD里  
禁止缓存  
<meta http-equiv="Expires" CONTENT="0">  
<meta http-equiv="Cache-Control" CONTENT="no-cache">  
<meta http-equiv="Pragma" CONTENT="no-cache">

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让IFRAME框架内的文档的背景透明  
<iframe src="about:<body style='background:transparent'>" allowtransparency></iframe>  
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打开窗口即最大化  
<script language="JavaScript">  
  
</script>  
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加入背景音乐  
<bgsound src="mid/windblue\[1\].mid" loop="-1"> 只适用于IE  
<embed src="music.mid" autostart="true" loop="true" hidden="true"> 对Netscape ,IE 都适用  
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滚动  
<marquee direction=up height=146 οnmοuseοut=start() οnmοuseοver=stop() scrollAmount=2>滚动信

息  
</marquee>  
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防止点击空链接时，页面往往重置到页首端  
代码“javascript:void(null)”代替原来的“\#”标记  
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文字或图片弹出指定大小的窗口  
在body中加入  
<script language="JavaScript" type="text/JavaScript">  
function MM\_openBrWindow(theURL,winName,features) \{window.open(theURL,winName,features);\}  
</script>  
弹出代码  
<a href="\#" target="\_self" onClick="MM\_openBrWindow

('windows01.htm','','width=550,height=380')" width="550" height="380" border="0">图片或文字

</a>

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flash按钮加链接  
on (press) \{  
getURL("[http://www.makewing.com","\_blank][http_www.makewing.com_blank]");  
\}  
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跳转页面代码  
<meta http-equiv="refresh" content="5;url=http://www.makewing.com">  
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细线分隔线  
<hr noshade size=0 color=\#C0C0C0>  
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网页中的自动换行  
<td style="word-break:break-all">就搞定了。  
完整的是  
style="table-layout: fixed;WORD-BREAK: break-all; WORD-WRAP: break-word"  
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消除ie6自动出现的图像工具栏，设置 GALLERYIMG属性为false或no .  
<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="no">  
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禁止页面正文内容被选取  
<body οncοntextmenu="return false" οndragstart="return false" onselectstart ="return false"

οnselect="document.selection.empty()" οncοpy="document.selection.empty()"

onbeforecopy="return  
false"οnmοuseup="document.selection.empty()">

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不能点右键，不用CTRL+A，不能复制作!  
<body οncοntextmenu="window.event.returnValue=false"  
οnkeypress="window.event.returnValue=false"  
οnkeydοwn="window.event.returnValue=false"  
οnkeyup="window.event.returnValue=false"  
οndragstart="window.event.returnValue=false"  
onselectstart="event.returnValue=false">  
</body>  
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IE浏览器支持一个 Body 属性 bgproperties，它可以让背景不滚动:  
<Body Background="图片文件" bgproperties="fixed">  
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随机变换背景图象（一个可以刷新心情的特效）  
<Script Language="JavaScript">  
　　 image = new Array(4); //定义image为图片数量的数组  
　　 image \[0\] = 'tu0.gif' //背景图象的路径  
　　 image \[1\] = 'tu1.gif'  
　　 image \[2\] = 'tu2.gif'  
　　 image \[3\] = 'tu3.gif'  
　　 image \[4\] = 'tu4.gif'  
　　 number = Math.floor(Math.random() \* image.length);  
　　 document.write("<BODY BACKGROUND="+image\[number\]+">");  
</Script>

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flash载入影片  
on (release)  
\{  
loadMovie("1-01.swf", "\_root.loaderclip");  
\}  
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图片表单按钮  
<form id="form1" name="form1" method="post" action="">  
<img src="login.gif" width="62" height="22" οnclick="document.form1.submit()" />  
</form>  
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左右阴影背景的CSS定义方法  
body \{  
text-align:center;  
background-repeat: repeat-y;  
background-position: center;  
background-image: url(../images/bg.jpg);  
\}

[http_www.microsoft.com_ie]: http://www.microsoft.com/ie
[http_www.microsoft.com]: http://www.microsoft.com
[http_msdn.microsoft.com]: http://msdn.microsoft.com
[http_www.makewing.com_blank]: http://www.makewing.com